Try this easy Naked Rainbow Cake recipe that's so pretty that it's perfect for any special occasion and will impress any guest. Make it for St. Patrick's Day, birthdays and more!
In a large mixing bowl, cream the sugar and butter together.
Add the egg whites and the vanilla. Beat again until smooth.
Add the flour, milk, baking powder, and salt. Beat again until the batter is smooth.
Divide the batter into 5 separate bowls.
Add one of the five food coloring colors to each bowl. The amount you add will depend on the type of food coloring you are using and how vibrant you want the colors to be. Stir well until colors are even.
Prepare 5 separate 8-inch round baking pans by coating them with cooking spray and a thin layer of flour. Or grease and flour the pans.
Bake each colored layer for 15 minutes or until a toothpick comes out clean. Or when the center of the cake springs back when gently pressed.
When the cakes are done baking, allow them to cool for 15 minutes before flipping them out of the pans. You may need to use a knife to release the edges. Allow them to cool completely on a wire rack before frosting them.
Frosting
In a medium mixing bowl, cream together the sugar and butter.
Add 2 tablespoons of the milk and the vanilla. Beat well.(If it is too thick, add more milk. If it is too thin, add more confectioner's sugar.)
Assembly
Place the blue layer of cake on the serving plate.
Cover it with a layer of frosting. You will need to spread five layers of frosting, so be sure to not go too thick with the frosting.
Continue with the green, yellow, orange, and red layers. Adding each one and then a layer of frosting in between.
Add sprinkles of your choice to the top.
Refrigerate until ready to serve. Allow to come to room temperature before serving.
Store in an airtight container or wrapped well with plastic wrap.