1cupUnsalted butter, softenedFoundation of the frosting.
3 1/2cupsPowdered sugarSweetens and smooths the frosting.
1/2cupUnsweetened cocoa powderEnhances chocolate flavor in frosting.
1/2teaspoonSaltBalances sweetness.
1/4cupWhole milkAdjusts frosting consistency.
1teaspoonVanilla extractAdds flavor to frosting.
Instructions
Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
In a large mixing bowl, combine the all-purpose flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt. Whisk until well incorporated.
In another bowl, beat the eggs, then add the whole milk, vegetable oil, and vanilla extract. Mix well.
Pour the wet ingredients into the dry ingredients and mix on medium speed until just combined.
Carefully stir in the boiling water. The batter will be thin.
Divide the batter evenly between the prepared cake pans.
Bake for 30-35 minutes, or until a toothpick inserted comes out clean.
Let the cakes cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.
Prepare the chocolate frosting by beating the softened butter until creamy. Gradually add the powdered sugar and cocoa powder.
Add the salt, milk, and vanilla extract. Beat until light and fluffy.
Once the cakes are cool, place one layer on a serving plate and spread frosting on top. Add the second layer and frost the top and sides.
Decorate with chocolate shavings, sprinkles, or seasonal candies.
Notes
Store leftover cake in an airtight container at room temperature for up to three days.