1 (18.25 ounce) package yellow cake mix
1 (3 ounce) package instant vanilla pudding mix
1 (3 ounce) package instant milk chocolate pudding mix
1 (8 ounce) can red velvet cake mix
Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 9-inch round cake pans.
In a large bowl, mix the cake mix, pudding mix, and chocolate pudding mix. Stirring until well blended, fold into the cake batter. Pour batter into prepared pans.
Bake in the preheated oven for 25 minutes, or until a toothpick inserted into the center of the cake comes out clean. Cool completely before cutting into squares.