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Aunt Emily's Chocolate Fudge Cake

Aunt Emily's Chocolate Fudge Cake is a tried and true recipe for the best two-layer chocolate cake filled and frosted with a dreamy chocolate fudge frosting.

Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings 20 servings
Calories 421 kcal
Author Lise Ode


For the cake

  • 3 ounces baking chocolate, melted (I used 1/2 cup semi-sweet chocolate chips)
  • 1/4 cup Dutch processed cocoa powder (I used Droste brand)
  • 2 1/2 cups cake flour, sifted (or 280g)
  • 2 teaspoons baking soda
  • 1/2 teaspoon salt
  • 1/2 cup unsalted butter, softened (or 1 stick)
  • 2 1/4 cups light brown sugar (2 cups packed or 1 pound)
  • 3 large eggs, room temperature
  • 1 1/2 teaspoons pure vanilla extract
  • 1 cup sour cream, room temperature
  • 1 cup boiling water

For the chocolate fudge frosting

  • 4 squares chocolate, semi-sweet (I used 4 ounces of semi-sweet chocolate chips or 1/2 cup plus 2 tablespoons)
  • 1/2 cup unsalted butter, softened (or 1 stick)
  • 1 lb. 10x or powdered sugar (about 3 3/4 cups)
  • 1/2 cup whole milk
  • 2 teaspoons vanilla extract
  • 1/4 cup Dutch processed cocoa powder (I used Droste brand)


For the cake

  1. Preheat oven to 350°F. Line two 8-inch round cake pans with parchment paper, spraying with non-stick cooking spray before and after placing parchment. Set aside.

  2. In a medium bowl, whisk together the cake flour, 1/4 cup cocoa powder, baking soda and salt. Set aside.

  3. In a large bowl, cream butter. Add sugar, eggs, beat 5 minutes. Add melted chocolate and vanilla. Stir in dry ingredients alternately with sour cream. Stir in the boiling water, mixing thoroughly. Pour into prepared pans. Bake for 40-45 minutes or until a toothpick inserted in middle comes out clean. Cool in pans 10 minutes.

For the frosting

  1. Melt chocolate in the microwave on high for 45 seconds. Stir until smooth. Mix in softened butter. Set aside Combine powdered sugar, milk and vanilla extract in a bowl. Stir in the chocolate mixture. Set the bowl on ice and beat until thick enough to spread. Spread cooled cake layers with a wooden spoon or an offset spatula. Serve and enjoy.

Nutrition Facts
Aunt Emily's Chocolate Fudge Cake
Amount Per Serving
Calories 421 Calories from Fat 153
% Daily Value*
Fat 17g26%
Saturated Fat 10g63%
Cholesterol 59mg20%
Sodium 281mg12%
Potassium 172mg5%
Carbohydrates 65g22%
Fiber 2g8%
Sugar 51g57%
Protein 4g8%
Vitamin A 408IU8%
Vitamin C 1mg1%
Calcium 58mg6%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.