Ingredients

3/4 c. Unsweetened cocoa powder

1 1/2 c. all-purpose flour

1 1/2 c. sugar

1 1/2 tsp. baking soda

3/4 tsp. baking powder

3/4 tsp. salt

2 large eggs

3/4 c. warm water

1/2 c. whole milk

1/4 c. sour cream

c. unsalted butter

3/4 tsp. pure vanilla extract

2 large egg whites

1/2 c. sugar

6 oz. unsalted butter

2 1/2 tbsp. creme de menthe

1 tsp. pure vanilla extract

12 Andes Creme de Menthe candies

36 white sprinkles

Preparation

Step 1Make the cake: Preheat oven to 350 degrees. Butter an 8-by-12-inch cake pan. Line bottom with parchment, then butter parchment, and dust with cocoa powder. Tap out excess.Step 2Whisk cocoa powder, flour, sugar, baking soda, baking powder, and salt in a large bowl. Stir in eggs, warm water, milk, sour cream, butter, and vanilla, mixing until smooth.Step 3Pour batter into prepared pan. Bake until a tester inserted into the center comes out clean, 35 to 40 minutes. Let cake cool in pan on a wire rack for 15 minutes. Invert cake onto rack, and let cool. Cake will keep, unfrosted and covered, overnight.Step 4Make the frosting: Mix whites and sugar in a mixer bowl set over a pan of simmering water. Heat, whisking constantly, until sugar dissolves and mixture is warm, 2 to 3 minutes.Step 5Remove from heat. Whisk on high speed until stiff peaks form, about 5 minutes. Add butter, several tablespoons at a time, whisking after each addition. Add creme de menthe and vanilla, and beat for 2 minutes, scraping down sides of bowl as needed.Step 6Using a paring knife, cut corners off mint candies to shape each into a football. Press 3 sprinkles onto each, using frosting as glue. Frost cooled cake. Arrange footballs on cake in 4 rows of 3. Cake will keep, covered, for up to 4 days. Slice just before serving.