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    Susan Brings Dessert » Recipes » Christmas

    Dark Bark and Snow Chocolate Yule Log Cake

    Published: Oct 28, 2025 by Susan Gravatt · This post may contain affiliate links · Leave a Comment

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    Our dark bark and snow chocolate yule log is a festive showstopper we created for the first episode of Hallmark’s Baked with Love: Holiday. And it was the episode's winning recipe! It blends a springy chocolate sponge, a lightly sweet mascarpone filling, and a chocolate buttercream “bark,” finished with pistachio-matcha “moss,” buttercream mushrooms, and a snowy dusting of powdered sugar. But most importantly, the steps below are designed to demonstrate how you can make it at home this Christmas season!

    Chocolate yule log, made from a chocolate sponge and chocolate buttercream, resting on a brown cutting board.

    This bake is also personal: it’s an ode to my dad and his lifelong love of chocolate fudge—there’s almost always a batch in the freezer around the holidays. And the pistachios you’ll see throughout? They’re a nod to Saman’s Iranian roots. On the show, we divided and conquered: I focused on the sponge, fillings, and buttercreams while Saman tempered the chocolate and handled key decorating touches. The result is a cake with heart, craft, and holiday magic.

    Inside slice from our chocolate yule log, filled with a whipped mascarpone cream.
    Jump to:
    • 🎄 7 Reasons You’ll Love This Yule Log Cake
    • ✨ Highlights at a Glance
    • 📋 Key Ingredients for a Classic Chocolate Yule Log Cake
    • 📖 Planning this Bake
    • 🪵 Step-by-Step Instructions for Baking the Yule Log
    • 🍫 Temper the Chocolate "Bark"
    • Whip the Mascarpone Filling
    • Pipe and Freeze the Buttercream Mushrooms
    • Make the Chocolate Buttercream (for the Log)
    • Assembling and Decorating Your Yule Log
    • Best Results: Baking in Grams
    • 💡 Pro Tips
    • ❓ Yule Log Cake Q&A
    • ❄️ Storage & Make-Ahead
    • Additional Baking Tips
    • More Desserts for Holiday and Chocolate Lovers
    • Dark Bark & Snow Yule Log Cake

    🎄 7 Reasons You’ll Love This Yule Log Cake

    • Chocolate on chocolate on chocolate! — From the chocolate sponge, to the chocolate buttercream, chocolate bark! Go even further with optional mini chips in the filling if you're a real chocolate hound.
    • Approachable technique — clear, step-by-step assembly so rolling a sponge feels doable.
    • Make-ahead friendly — Prep bark, chocolate buttercream, and mushrooms in advance; assemble day-of.
    • Textural contrast — Silky mascarpone plays off the crisp and crunch of the tempered chocolate. We have a soft sponge and pistachios to add a nutty crunch of complementary flavors and textures.
    • Playful décor — What is dessert without decor?! Buttercream mushrooms, mossy pistachio-matcha accents, and powdered-sugar “snow” take the festive vibes up a notch here.
    • Personal story — This dessert is an homage to my dad’s tradition of making rich, chocolaty fudge during the holidays. It's also an ode to Saman's grandmother, who is famous for her rolled cakes.
    • Holiday centerpiece — This is a true showstopper for gatherings.

    We had the time of our lives appearing on Hallmark’s baking competition series, Baked with Love: Holiday, which premiered October 27, 2025!

    This baking journey was even better with my husband Saman at my side as baker, teammate, and supporter.

    We're excited for you to see the holiday magic unfold! 🎄

    Photo of Susan and Saman recreating this cake recipe at home.
    More about Baked with Love: Holiday

    ✨ Highlights at a Glance

    🍫 Chocolate-forward

    🍄 Buttercream mushrooms + tempered bark

    📖 Reader-friendly technique walkthrough

    ✅ Components can be prepared ahead

    📋 Key Ingredients for a Classic Chocolate Yule Log Cake

    Overhead shot of key ingredients for chocolate yule log.

    The recipe card below lists the full ingredients and quantities. Here are some of the noteworthy components to this classic Christmas dessert:

    • Chocolate sponge: whipped eggs, cake flour, and a blend of cocoas yield a flexible, springy roulade (rolls without cracking when properly handled)
    • Mascarpone filling: lightly sweet, stabilized by quick whipping to soft peaks in a chilled bowl
    • Chocolate buttercream: smooth, pipeable, and perfect for bark texture
    • Tempered dark chocolate bark: glossy snap and finished with roasted pistachios
    • Decor: buttercream mushrooms, pistachio-matcha “moss,” rosemary sprigs, powdered sugar snowfall

    📖 Planning this Bake

    To break down the recipe into manageable steps, here's how we thought about this yule log:

    1. Read through the recipe card in full.
    2. Start setting out all your ingredients (mise en place)
    3. Make and bake your sponge
    4. Temper your chocolate
    5. Whip filling
    6. Make buttercreams (create mushrooms first)
    7. Roll & chill your log
    8. Frost & decorate! ✨

    🪵 Step-by-Step Instructions for Baking the Yule Log

    Before diving into the steps below, preheat your oven to 220°C / 425°F. Line a 9 × 13 inch jelly roll pan with parchment and grease well.

    Egg whites beaten to soft peaks with sugar in a mixing bowl.

    Start by whisking 7 egg whites with a pinch of salt and ¼ teaspoon cream of tartar until foamy; slowly add 50 g sugar and beat to soft peaks (not stiff). Keep at room temp.

    Egg yolks whipped pale with sugar and vanilla until thick and creamy.

    In a clean bowl, beat 7 egg yolks with the remaining 50 g sugar, 1 tablespoon vanilla, and a pinch of salt until pale and creamy, 5–7 minutes.

    Chocolate sponge batter as eggs are gently folded in.

    Sift and mix 70 g cake flour + 21 g cocoa + pinch of salt; fold into yolks.

    We used an equal parts blend of black, natural, and unsweetened cocoa powders for depth, but you could use whatever powder you have on hand.

    Chocolate sponge batter in a mixing bowl.

    Fold egg whites into yolk batter gently until airy and pourable (slightly thicker than pancake batter).

    Pouring chocolate sponge batter into a parchment-lined baking sheet.

    Pour and spread batter into pan.

    Chocolate sponge batter in a parchment-lined baking sheet.

    Once batter is in pan, run finger/thumb around the edge of the pan to help minimize the batter sticking to the pan's sides.

    Bake 10–12 min until springy or just pulling from the sides. Loosen edges; cool on a rack with parchment underneath until completely cool (20–30 min).

    🍫 Temper the Chocolate "Bark"

    Dark chocolate melted over double boiler for tempering.

    Melt ⅔ of the finely chopped dark chocolate to 113–120°F (45–49°C) over a double boiler. Remove from heat. Stir in the remaining ⅓ (“seed”) until chocolate cools to 82°F (28°C).

    Tempered chocolate spread thinly on parchment with offset spatula.

    Briefly rewarm to 88–90°F (31–32°C). Use an offset spatula to thinly spread the chocolate on parchment paper.

    Tempered chocolate spread thinly on parchment with pistachios on top.

    Sprinkle roasted pistachios and salt.

    Tempered chocolate rolled into parchment paper to set.

    Roll in parchment paper, and let set.

    Tempered chocolate broken into shards.

    Break the chocolate into shards once hardened.

    Whip the Mascarpone Filling

    1. Chill the mixer bowl (5–10 min).
    2. Whip mascarpone, cream, powdered sugar, vanilla, almond extract, and a pinch of salt to soft peaks (1–2 min). Refrigerate.
    Ingredients for mascarpone frosting or whipped topping.
    Mascarpone whipped.

    Pipe and Freeze the Buttercream Mushrooms

    1. Beat shortening + butter smooth; add powdered sugar, meringue powder, vanilla, cream, and salt; mix until smooth (2–4 min).
    2. Divide: half white, half tinted red. Smooth with a spatula; transfer to piping bags fitted with open round tips.
    3. On wax paper, pipe stems and caps; add white sprinkles to caps; freeze until firm. Assemble by flattening stem tops and “gluing” with buttercream.
    Process shot for making cream cheese frosting.
    Piped mushroom caps and stems set on parchment for freezing.

    💡 Note on shortening vs. butter:

    • If you don't plan on eating the mushrooms, you could use all-shortening for making them and ditch the butter. The butter is nice for flavor, while an all-shortening recipe will hold up better under high heat.

    Make the Chocolate Buttercream (for the Log)

    Here, I used a variation of my recipe for small batch chocolate buttercream frosting, and it worked so well!

    Quick to make (key for a timed baking show 😅), easy to pipe, and a decadent, rich chocolate flavor. 🍫

    1. Beat butter, powdered sugar, cocoa, cream, vanilla, and salt until fluffy (~5 min). Adjust cream to taste/texture.
    2. Smooth frosting, then transfer to a piping bag with a textured tip, like Wilton 1M.
    Mixing bowl containing butter, cream, cocoa powder, and other ingredients for chocolate frosting.
    Mixing bowl containing whipped chocolate frosting.

    Assembling and Decorating Your Yule Log

    Action shot of adding pistachios to our chocolate yule log's filling.

    Spread the sponge with mascarpone filling (don’t overfill the end edge). Optionally, sprinkle with roasted crushed pistachios and/or mini chocolate chips.

    Action shot of rolling our chocolate yule log.

    Using parchment as an aid, roll tightly along the long side. Let roll chill for 15-20 minutes.

    Our baked and rolled dark bark and snow yule log.

    Trim ends cleanly; attach a small slice as a side “branch.”

    Action shot of frosting our chocolate yule log with chocolate buttercream.

    Lightly pipe and smooth the outside with chocolate buttercream.

    Action shot of Saman decorating our chocolate yule log.
    Action shot of Saman decorating our chocolate yule log.

    Layer on chocolate bark shards.

    Note that you'll want to add chocolate shards while frosting is still fresh and pliable on the log. The buttercream acts as a glue to hold the chocolate pieces.

    Action shot of dusting our chocolate yule log with powdered sugar.
    Overhead image of our finished chocolate yule log.

    Mix remaining crushed pistachios with matcha powder for “moss." Add buttercream mushrooms, tuck in rosemary sprigs, and finish with powdered sugar snow.

    Best Results: Baking in Grams

    If you’re not already, use a kitchen scale for accuracy in baking.

    While I include cups and grams in my recipe cards, weighing your ingredients and writing or following a recipe using a standard metric like grams ensures consistency.

    I highly recommend investing $30 or less in a kitchen scale.

    💡 Pro Tips

    1. Roll while warm. A slightly warm sponge rolls cleanly; too cool and it cracks.
    2. Chill your bowl for mascarpone. A cold bowl = quick soft peaks without overwhipping.
    3. Tempering pays off. Work within the temperature ranges for glossy, snappy bark.

    ❓ Yule Log Cake Q&A

    Do I have to temper the chocolate bark?

    Tempering gives a shiny finish and crisp snap. If you skip it, you can still spread melted chocolate for a rustic look.

    What’s the trickiest part?

    Rolling the sponge: too warm it tears, too cool it cracks. Follow the timeline guidance and roll with confidence.

    Can I make parts ahead?

    Yes. Make buttercream mushrooms and chocolate bark in advance; assemble and finish day-of.

    Are the pistachios essential?

    We love the nutty crunch (and personal nod), but you can omit for a nut-free version and focus on the buttercream + bark textures.

    Our finished chocolate yule log, resting on a wooden cutting board.

    ❄️ Storage & Make-Ahead

    Same day: Best enjoyed the day it’s assembled.

    Refrigerate: Cover and refrigerate up to 3 days.

    Make ahead: Bake and pre-roll the sponge (without filling) a day ahead; store tightly wrapped. Buttercream mushrooms and tempered bark can be made in advance.

    Additional Baking Tips

    1. Set your station first. Weigh/sift dry ingredients, separate eggs, line pan, and chill the bowl for mascarpone before you start.
    2. Mind the batter texture. Aim for airy and pourable—slightly thicker than pancake batter—so the cake rolls cleanly.

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    Print
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    Dark Bark & Snow Yule Log Cake


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    • Author: Susan Gravatt
    • Total Time: 2 hours
    • Yield: 1 yule log 1x
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    Description

    Our chocolate yule log was a winning recipe on Hallmark’s Baked with Love: Holiday! And with the detailed steps and tricks throughout this recipe, it's easier than it looks to recreate at home.


    Ingredients

    Scale

    Chocolate Sponge Cake

    • 7 large eggs, separated (whites at room temperature, yolks ok room temp or chilled)
    • 100 g sugar, divided (50 g + 50 g)
    • 70 g cake flour, sifted
    • 21 g cocoa powder, sifted (7 g black, 7 g unsweetened, 7 g natural)
    • Pinch kosher salt
    • 1 Tbsp vanilla extract
    • ¼ tsp cream of tartar
    • Non-stick spray or butter + flour for pan; parchment paper; lemon juice or vinegar to wipe bowl.

    Mascarpone Filling

    • 113 g mascarpone, chilled
    • 100 g cold heavy (or whipping) cream
    • 65 g powdered sugar
    • 1 tsp vanilla extract
    • ¼ tsp almond extract
    • Pinch salt

    Buttercream for Mushrooms

    • 60 g shortening; 60 g unsalted butter (room temp)
    • 170 g powdered sugar
    • 2 tsp meringue powder
    • 1 tsp vanilla
    • 2 tablespoons heavy cream
    • Pinch salt
    • Red food dye
    • Small white sprinkles

    Chocolate Buttercream for Log

    • 170 g unsalted butter (room temp)
    • 345 g powdered sugar
    • 60 g cocoa powders (mix)
    • 80 g heavy cream (about ⅓ cup)
    • 2 tsp vanilla
    • Pinch salt

    Tempered Chocolate Bark

    • 226 g dark chocolate (60–70%), finely chopped
    • 100 g very finely chopped roasted pistachios
    • Pinch salt

    Tempering: Melt 113–120°F (45–49°C), cool 82°F (28°C), rewarm 88–90°F (31–32°C).

    Additional Decorations

    • 2 Tbsp matcha powder
    • 50 g finely chopped roasted pistachios
    • Rosemary (coated in powdered sugar)
    • Powdered sugar for “snow”
    • Optional mini chocolate chips for the filling

    Instructions

    Sponge Cake

    1. Preheat oven to 220°C (425°F).  Line a 9 × 13 inch jelly roll pan with parchment and grease well.
    2. Wipe bowl with lemon juice or vinegar. Whisk egg whites with salt + cream of tartar until foamy. Gradually add 50 g sugar; beat to soft peaks.
    3. In a clean bowl, beat yolks with 50 g sugar, vanilla, and salt until pale and creamy, 5–7 min.
    4. Sift flour + cocoa; fold into yolk mixture.
    5. Fold egg whites gently into yolk mixture. Batter should be airy and pourable.
    6. Spread in prepared pan, smoothing evenly.
    7. Bake 10–12 min, until springy. Cool with parchment underneath.

    Mascarpone Filling

    1. Chill mixing bowl.
    2. Beat mascarpone, cream, sugar, vanilla, almond extract, and salt until soft peaks form, 1–2 min.

    Buttercream Mushrooms

    1. Beat shortening + butter until smooth.
    2. Add sugar, meringue powder, vanilla, cream, and salt. Beat 2–4 min.
    3. Divide frosting: half white, half tinted red. Smooth and transfer to piping bags fitted with open round tips.
    4. Pipe stems + caps on wax paper. Add sprinkles to caps. Freeze as you continue working through the recipe.
    5. Once pieces are firm, assemble mushrooms by attaching stems + caps with buttercream.

    Chocolate Buttercream

    1. Beat butter, sugar, cocoa, cream, vanilla, and salt until fluffy, 5 min. Adjust cream if needed.
    2. Smooth and transfer to piping bag with textured tip (like Wilton tip 1M).

    Chocolate Bark

    1. Melt ⅔ chocolate over double boiler to 113–120°F.
    2. Stir in remaining ⅓ until cooled to 82°F.
    3. Briefly rewarm to 88–90°F. Spread thinly on parchment, sprinkle pistachios + salt, and roll into parchment paper to set.
    4. Once set, break chocolate into shards for attaching to log.

    Assemble and Decorate Log

    1. Spread mascarpone over sponge. If desired, sprinkle pistachios and mini chips across filling for textured insides.
    2. Roll tightly with parchment. Chill 15 min.
    3. Trim ends. Attach a branch if desired, and place log on serving board or platter for display.
    4. Cover with chocolate buttercream, smoothing sides and texturing ends.
    5. Add bark shards along sides.
    6. Scatter pistachio-matcha “moss” around the log and display platter.
    7. Arrange mushrooms.
    8. Tuck rosemary sprigs.
    9. Dust with powdered sugar for snow.

    Notes

    • This yule log would comfortably serve 12 people.
    • Nutritional information is calculated as an estimate and should be used as a general guide only. Actual values may vary depending on exact ingredients and brands used. For precise nutrition info, consult a registered dietitian or use a detailed nutrition calculator.
    • If you don't plan on eating the mushrooms, you could use all-shortening for making them and ditch the butter. The butter is nice for flavor, while an all-shortening recipe will hold up better under high heat.

    For pacing and order, here's the timeline to keep in mind:

    1. Mise en place
    2. Sponge & tempering
    3. Bake sponge & whip filling
    4. Buttercreams (mushrooms first)
    5. Roll & chill
    6. Frost & decorate
    • Prep Time: 45 minutes
    • Tempering and Decorating: 1 hour
    • Cook Time: 15 minutes
    • Category: Dessert

    Nutrition

    • Serving Size: 1 slice
    • Calories: ~438 kcal
    • Sugar: ~37.7 g
    • Sodium: ~129 mg
    • Fat: ~29 g
    • Saturated Fat: ~14.6 g
    • Unsaturated Fat: ~11.2 g
    • Trans Fat: ~0.5 g
    • Carbohydrates: ~43 g
    • Fiber: ~1.7 g
    • Protein: ~5.2 g
    • Cholesterol: ~94 mg

    🌟 Tried this recipe?

    Leave a comment and tag @susanbringsdessert on social media to share your creation!

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    About Susan Gravatt

    Susan is a recipe developer and food photographer. She specializes in sharing original dessert recipes and unique buttercream cake designs and tutorials. Her goal is to help readers feel kitchen-confident when they're baking desserts and decorating cakes at home.

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    headshot of Susan Gravatt, the baker and blogger behind Susan Brings Dessert.

    👋🏻 Hi, I'm Susan!

    I'm a self-taught baker who loves creating straightforward, easy-to-follow dessert recipes for the home baker.

    My goal is to give you the photos, tips, and tricks you need in each post so you can make jaw-dropping desserts in your own kitchen.

    My favorite part about this site is sharing all these ideas with you, especially when it comes to fun and unique ways to decorate cakes, cupcakes, and cookies with buttercream!

    Get to know me


    🎄 As Seen in Hallmark Channel's Baked with Love: Holiday

    Susan and Saman in the holiday baking barn for Hallmark Channe's Baked with Love: Holiday

    My husband Saman and I had the time of our lives appearing on Hallmark’s baking competition series, Baked with Love: Holiday!

    More about Baked with Love: Holiday

    📸 © 2025 Hallmark Media/Photographer: Ali Painter


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