Easy Red Velvet Cake
["1 box butter cake mix", "1 stick butter", "5 eggs", "2/3 c. milk", "2 Tbsp. cocoa", "2 oz. red food coloring"]
["Dissolve cocoa and food coloring and set aside.", "Mix all other ingredients and beat on medium speed for 2 minutes.", "Beat in cocoa and food coloring mixture.", "Divide mixture evenly between 3 (9-inch) round greased and floured pans.", "Bake at 350\u00b0 for 25 to 30 minutes.", "Cool before icing."]
["butter cake mix", "butter", "eggs", "milk", "cocoa", "red food coloring"]