Favourite Fudgy Chocolate Layer Cake
Submitted by sallieg
Fudgy chocolate layer cake made with a full cup of cocoa powder, brown sugar, and buttermilk for tender, deep-flavored crumb. Frosted with a melted-chocolate buttercream and topped with chocolate curls. The classic two-layer birthday cake.
YIELD
16 servingsPREP
20 minCOOK
30 minREADY
2 hrsA Two-Layer Chocolate Cake With Real Fudge Backbone
When the cake job calls for chocolate, this is the recipe to reach for. A full cup of cocoa powder packs the deepest possible chocolate flavor into the layers, while a half-and-half mix of granulated and brown sugar gives both crisp sweetness and molasses-tinged depth. The brown sugar isn’t just for flavor; it adds moisture that keeps the cake fudgy through the next day.
Buttermilk does the rest. The acid tenderizes the gluten, gives a light tangy contrast to the chocolate, and reacts with the baking soda for a tall, even rise. Alternating it with the dry ingredients (rather than dumping it all in) keeps the batter emulsified and prevents toughness.
The frosting is genuine chocolate buttercream, not just chocolate-flavored. Three ounces of melted unsweetened chocolate folded into a butter-and-powdered-sugar base gives you a frosting with real bite, glossy spreadability, and the kind of cocoa intensity that pairs perfectly with the cake.
Pro Tips
- Bring all dairy and eggs to room temperature before starting. Cold ingredients seize the butter and break the emulsion.
- Sift the cocoa with the flour to break up clumps. Cocoa lumps are stubborn and don’t always disappear in the mixer.
- Don’t overmix once the flour is in. Overworked chocolate cake batter turns rubbery instead of tender.
- Cool the layers completely before frosting. Warm cakes melt buttercream into a slipping mess.
- Let the frosted cake stand at room temperature for 30 minutes before slicing. The frosting needs time to set up firm.
Variations
- Add 1 teaspoon espresso powder to the dry ingredients to deepen the chocolate intensity without adding coffee flavor.
- Fill between the layers with raspberry jam or fresh whipped cream for a different middle.
- Swap out the chocolate buttercream for a cream cheese frosting for a tangier finish.
Ingredients
Directions
Preheat oven to 350℉ (180℃). Line bottom of two 9 inch round cake pans with waxed paper. Grease paper and side if pans. Dust with flour.
Mix flour, cocoa, baking soda, and salt.
In another bowl, beat butter, sugar, and brown sugar at medium speed until light and fluffy. Add eggs, 1 at a time, beating well after each addition. Add vanilla.
At low speed, alternate beat flour mixture and buttermilk into butter mixture just until blended.
Divide batter equally between prepared pans. Bake cakes until a toothpick inserted in the center comes out clean, 25 to 30 minutes. Transfer pans wire racks to cool for 10 minutes. Turn out into racks. Remove paper. Turn layers top side and cool completely.
To prepare frosting:
Beat butter and confectioner’s sugar at medium until light and fluffy. Add melted chocolate and vanilla; continue beating until shiny and smooth.
Place 1 cake layer on a serving plate; spread with frosting. Top with remaining cake layer. Spread with frosting on top and sides of cake.
Let cake stand for at least 30 minutes before sprinkling with chocolate shavings and slicing.
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