Heat oven to 350 degrees.

Spray 3 equal sized cake pans liberally with cooking spray. I prefer the cooking spray with flour for baking. *If using pans smaller than 8" or 9", use one box of cake mix and one batch of frosting.

Prepare the white cake mix according to package instructions. Pour the prepared cake mix into 3 separate bowls OR pour one equal part into one cake pan and the other two parts into separate bowls.

Dye one of the equal parts of cake mix with blue food coloring until you get the desired color. For the red cake mix, dying the white cake mix pink makes it easier to get the red color you desire for this cake. Put a couple drops of pink in to color pink and then add red food coloring until it reaches the desired color.

Pour the colored cake mixes into the remaining two pans. Cook according to the box instructions and until cooked through. Once cooked, cool on a cooling rack.

While the cakes are cooling, prepare your favorite white frosting. I prefer the recipe added in the notes section below.

Assemble the cake by first placing the blue layer on your cake board or stand. Add a layer of white frosting. Place the white cake on top of the blue layer with frosting. Frost that layer. Add the red layer. Frost the rest of the cake all over, or however you want to frost it, and then decorate to your choosing.