For fans of the classic boxed yellow cake with chocolate frosting, here is a soft and easy homemade version with a creamy chocolate buttercream.
Equipment
- Mixing Bowls
- Spatulas
- Hand or Standing Mixer
- Measuring Cups
- Measuring Spoons
- 2, 9-inch Round Cake Pans
- Wire Rack
- Fine Mesh Sieve
Ingredients
CAKE
- 2 ¼ cups all-purpose flour
- ¼ cup cornstarch
- 1 ½ tsp baking powder
- ½ tsp baking soda
- ½ tsp salt
- ¼ cup unsalted butter softened
- 1 ½ cups granulated sugar
- 1 large egg at room temperature
- 2 egg yolks room temperature
- ¼ canola oil
- 1 cup mayo
- 1 tbsp vanilla extract
- 1 cup buttermilk
FROSTING
- 1 ½ cups unsalted butter softened
- 4 ½ cups powdered sugar sifted
- 6 tbsps cocoa powder sifted
- 6 tbsps semi-sweet chocolate
- ⅓ tsp salt
- 2 tbsp heavy cream
Instructions
- Preheat your oven to 350F and grease and line two 9-inch round cake pans with parchment paper
- In a bowl, whisk together your flour, cornstarch, baking powder, baking soda, and salt. Set aside
- In a separate large mixing bowl, beat your softened butter and sugar together for 3 minutes, until light and fluffy
- Add your eggs and yolks to the butter mixture and combine before adding in your oil, mayo, vanilla, and buttermilk
- Pour your dry ingredients into the bowl with your wet ingredients and mix until just combined, being careful not to overmix your batter
- Divide your batter evenly between your greased and lined cake pans and spread evenly with a spatula
- Bake for 22-27 minutes or when a toothpick inserted into the center of each cake comes out clean or with just a few moist crumbs
- Leave the cakes to cool in their pans for 10 minutes before removing them and allowing them to cool completely on a wire rack
- Once your cakes are cool, make your chocolate buttercream. Add your softened butter to a large mixing bowl and beat for a few seconds to smooth out. Sift in your powdered sugar and cocoa powder and mix until combined. In a microwave-safe bowl, add your semi-sweet chocolate heating it for 30-45 seconds, stirring every 10 seconds, until melted. With your mixer on, pour your melted chocolate into your frosting and beat until combined. Finally add in your salt and heavy cream, mixing until smooth
- Frost your cake as desired and enjoy!
