Matilda-Style Triple Chocolate Fudge Cake: Ultra-Moist Tips, FAQ & printable recipe

Tips for success

For the most accurate measurements, use a kitchen scale for flour and cocoa. Spoon the flour into the measuring cup and level it off; do not scoop directly from the bag, as this compacts the flour and leads to a dry cake.

When adding the boiling espresso, pour it in a steady stream while the mixer runs on low to avoid splashing. The batter will be very thin, but do not be alarmed; this is correct. Use a spatula to scrape the bottom of the bowl to ensure no dry pockets remain.

To achieve a perfectly smooth frosting, warm your offset spatula under hot water and dry it before spreading. This helps the frosting glide over the cake. If the frosting becomes too thick to spread, microwave it for 5-10 seconds and stir.

For clean slices, dip a serrated knife in hot water, wipe it dry, and slice with a gentle sawing motion. Wipe the knife between cuts. The cake is best served at room temperature, so take it out of the refrigerator 30 minutes before serving.

Variations

• Mocha Fudge Cake: Add 1 tablespoon of instant espresso powder to the dry ingredients along with the cocoa. In the frosting, replace 2 tablespoons of the sour cream with strong brewed coffee. The coffee flavor becomes more pronounced, making it a mocha lover's dream.
• Peanut Butter Swirl: Before baking, drop spoonfuls of creamy peanut butter onto the batter and swirl with a knife. For the frosting, mix 1/2 cup of peanut butter into the melted chocolate and butter before adding the sour cream. The salty-sweet combination is irresistible.
• Raspberry Chocolate: Spread a thin layer of seedless raspberry jam between the cake layers before frosting. Add fresh raspberries on top of the finished cake. The tartness of the berries cuts through the rich chocolate, creating a bright contrast.
• Mint Chocolate: Add 1 teaspoon of peppermint extract to the cake batter. In the frosting, add 1/2 teaspoon of peppermint extract along with the sour cream. Garnish with crushed peppermint candies or chocolate mint leaves for a festive touch.

Storage and make-ahead

Fridge

Store in the refrigerator up to 5 days; bring to room temperature before serving for best texture.

Freezer

Freeze unfrosted layers or fully assembled cake for up to 2 months; thaw in the refrigerator overnight.

Reheat

To serve warm, microwave individual slices for 10-15 seconds; the frosting will soften and the cake becomes even more fudgy.

Store the cake in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to 5 days. The frosting will firm up in the fridge, so let it come to room temperature before serving.

For longer storage, wrap individual slices in plastic wrap and refrigerate for up to a week. The cake's flavor deepens as it sits, making it even more delicious the next day. Keep it away from strong odors, as the cake absorbs them.

The cake layers can be baked a day ahead and stored, wrapped tightly in plastic wrap, at room temperature. The frosting can also be made a day ahead and refrigerated; let it come to room temperature and whisk before using.

Assemble the cake no more than 24 hours before serving to keep the frosting fresh. If making the entire cake ahead, refrigerate it and let it sit at room temperature for 30 minutes before serving. The cake can also be frozen for up to 2 months.

Serving ideas

Serve this cake at room temperature, as the crumb is moistest and the frosting is soft and glossy. Slice with a warm, dry knife for clean cuts. A small scoop of vanilla ice cream or a dollop of lightly sweetened whipped cream balances the intense chocolate, but the cake is also magnificent on its own. For a dramatic presentation, dust the top with a little cocoa powder or add a few chocolate shavings.

This cake is rich, so a modest slice is satisfying. Pair it with strong coffee, espresso, or a glass of cold milk. For a birthday, add candles; the cake's flat top is perfect for them. The cake serves 12 generously, and leftovers are welcome. It is a celebration cake that commands attention, so present it on a beautiful stand and let the glossy frosting shine.

Frequently asked questions

Recipe card

Matilda-Style Triple Chocolate Fudge Cake: Ultra-Moist

Prep 20 minCook 35 minRest 30 minTotal 1 h 25 minServes 12

Ingredients

• 2 cups all-purpose flour
• 2 cups granulated sugar
• 1 cup Dutch-processed cocoa powder
• 1 cup buttermilk
• 1/2 cup vegetable oil
• 2 large eggs
• 1 cup boiling espresso
• 12 oz dark chocolate, chopped
• 1/2 cup unsalted butter, cubed
• 1/2 cup sour cream

Instructions

1. Heat the oven to 300°F (150°C). Grease and flour two 9-inch round cake pans. In a large bowl, whisk together the flour, sugar, and Dutch cocoa. Add the buttermilk, vegetable oil, and eggs, and beat with an electric mixer on medium speed until smooth, about 2 minutes. With the mixer on low, slowly stream in the boiling espresso. The batter will be very thin and glossy; scrape the sides and whisk by hand to ensure everything is incorporated.
2. Divide the batter evenly between the prepared pans. Tap each pan on the counter a few times to release air bubbles. The batter will be very thin, so level it gently with a spatula. Place both pans on the center rack of the oven, leaving space between them for air to circulate.
3. Bake the cakes at 300°F (150°C) for 35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. The low temperature prevents a dome from forming, giving you flat, even layers. Let the cakes cool in the pans on a wire rack for 15 minutes, then turn them out onto the rack to cool completely. The cakes will be very moist and tender.
4. Allow the cakes to cool completely on the wire rack, about 30 minutes. Do not frost warm cakes, as the frosting will melt and slide off. If the cakes have any slight domes, level them with a serrated knife. The layers should be cool to the touch and firm enough to handle.
5. In a medium saucepan, melt the dark chocolate and butter over low heat, stirring constantly, until smooth. Remove from heat and let cool for 5 minutes. Whisk in the sour cream until the frosting is glossy and thick. It should be spreadable but not runny. If it becomes too thick, add a splash of warm water or milk.
6. Place one cake layer on a serving plate or cake stand. Spread a generous amount of the fudge frosting over the top, about 1/2 cup, and smooth it with an offset spatula. Place the second layer on top, flat side up. Press gently to adhere. Spread the remaining frosting over the top and sides of the cake, creating a thick, glossy coating. Use a bench scraper for smooth sides if desired.
7. For a mirror-like shine, warm the remaining frosting slightly (about 10 seconds in the microwave) and pour it over the top of the cake, letting it drip down the sides. Use a spatula to smooth it gently. Let the cake set at room temperature for 30 minutes before slicing. The frosting will firm up slightly but remain luscious.

Contains: gluten, eggs, milk

Estimated nutrition per serving

Calories

520

Protein

7 g

Carbohydrates

60 g

Fat

30 g

Automatic estimate from the ingredient list, not laboratory-verified.