Classic Yule Log (Buche de Noel)

Instructions

Making the Chocolate Sponge Cake

1. Preheat your oven to 350°F (175°C). Line a 12x17-inch rimmed baking sheet (half sheet pan) with parchment paper, leaving a 2-inch overhang on the short sides. Grease the parchment lightly with butter or cooking spray.

2. In a large bowl, whisk the egg yolks with 1/2 cup of the granulated sugar until thick, pale, and ribbony — about 3 minutes of vigorous whisking or 2 minutes with an electric mixer.

3. Sift the 1/3 cup cocoa powder directly into the egg yolk mixture. Add the vanilla extract and fold gently until just combined.

4. In a separate clean, dry bowl, beat the egg whites and salt with an electric mixer on medium speed until soft peaks form. Gradually add the remaining 1/4 cup sugar and continue beating until stiff, glossy peaks form. Do not overbeat or the whites will become dry and grainy.

5. Fold one-third of the egg whites into the chocolate-yolk mixture to lighten it. Then gently fold in the remaining whites in two additions, using a large rubber spatula with slow, sweeping motions. Be very gentle to preserve the volume — some white streaks are acceptable.

6. Pour the batter onto the prepared baking sheet and spread it evenly with an offset spatula, making sure to fill the corners.

7. Bake for 10-12 minutes, until the cake springs back when gently touched and a toothpick comes out clean. Do not overbake or the cake will crack when rolled.

8. While the cake bakes, lay a clean kitchen towel on the counter and dust it generously with powdered sugar.

Rolling the Cake

9. Immediately after removing the cake from the oven, run a knife around the edges to loosen it. Invert the cake onto the prepared powdered-sugar towel. Carefully peel off the parchment paper.

10. Starting from one short end, gently roll the warm cake up together with the towel, forming a tight log shape. The towel prevents the cake from sticking to itself. Place the rolled cake seam-side down and let it cool completely, about 1 hour. This trains the cake to hold its rolled shape.

Making the Chocolate Mousse Filling

11. Place the 8 ounces of finely chopped chocolate in a heatproof bowl. Heat 3/4 cup of the heavy cream in a small saucepan until it just begins to simmer. Pour the hot cream over the chocolate and let it sit for 2 minutes, then stir until completely smooth. Stir in the espresso powder. Let this ganache cool to room temperature, about 30 minutes.

12. In a separate bowl, whip the remaining 1 1/4 cups heavy cream until stiff peaks form. Fold the whipped cream into the cooled ganache in three additions, folding gently until no white streaks remain. Refrigerate for 15 minutes to firm up slightly.

Filling and Rolling

13. Carefully unroll the cooled cake and remove the towel. The cake will want to curl — that is fine and helpful.

14. Spread the chocolate mousse filling evenly over the entire surface of the cake, leaving a 1/2-inch border along the far short edge.

15. Re-roll the cake, starting from the same short end, this time without the towel. Roll slowly and firmly but gently. Place the log seam-side down on a serving platter or parchment-lined board.

16. Refrigerate the assembled log for at least 30 minutes while you make the frosting.

Making the Bark Frosting

17. Melt the 12 ounces of chocolate chips in a heatproof bowl set over a pot of simmering water (double boiler) or in the microwave in 30-second intervals. Let it cool to room temperature.

18. In a large bowl, beat the softened butter until smooth and creamy. Gradually add the 3 cups powdered sugar and 1/3 cup cocoa powder, alternating with the cream, beating on medium speed until fluffy. Add the melted chocolate and vanilla extract, beating until well combined and spreadable.

Assembling the Yule Log

19. Remove the cake roll from the refrigerator. To create the branch stump, cut a 3-inch piece from one end at a 45-degree angle. Attach this piece to the side of the log with a dab of frosting to resemble a cut branch.

20. Frost the entire log and branch with the bark frosting using an offset spatula. Do not frost the cut ends — these should show the spiral of cake and filling like the rings of a real log.

21. Using the tines of a fork, drag lengthwise lines through the frosting to create a bark-like wood grain texture. Add knots and swirls here and there for a realistic look.

22. Refrigerate the decorated log for at least 1 hour before serving.

Final Decoration

23. Just before serving, dust the log lightly with powdered sugar to resemble snow. Arrange rosemary sprigs to look like pine branches and scatter a few fresh cranberries around the base.

Tips

• Room temperature eggs are essential. They whip to a much greater volume than cold eggs, which is critical for this light sponge cake. Set the eggs out 30 minutes before starting.

• If the cake cracks, do not panic. The bark frosting will cover minor cracks completely. Serious breaks can be disguised as natural log features — that is the beauty of this rustic design.

• Dutch-process cocoa is preferred here for its smoother, less acidic flavor and deeper color. Natural cocoa can be substituted in a pinch.

• Espresso powder intensifies the chocolate flavor without making the filling taste like coffee. It is a secret weapon in chocolate baking.

• Make ahead: The completed yule log can be refrigerated, covered, for up to 2 days before serving. Add the powdered sugar snow and fresh garnishes just before presenting.

• Bring to room temperature for 15-20 minutes before slicing. This makes the mousse filling softer and the cake more tender. Use a sharp serrated knife for the cleanest slices.

More Christmas Showstopper Desserts

The yule log is the crown jewel of the French Christmas table — but there are plenty of other spectacular holiday finales to explore.

• Peppermint Cheesecake — creamy New York-style cheesecake with a chocolate crust and candy cane topping, a crowd favorite for Christmas dinner
• Classic Christmas Fudge — serve small squares alongside yule log slices for a satisfying dessert duo
• Gingerbread Cookies — the quintessential Christmas bake, perfect for decorating parties and gift tins
• Christmas Cookie Recipes — the complete collection of holiday baking from sugar cookies to shortbread
• International Christmas Recipes — discover how other cultures celebrate Christmas through their traditional desserts and dishes