The pan fits one box of regular cake mix (do not make a homemade cake for this, mixes are just fine and work perfectly).
I used a basic frosting recipe and some decorator dyes from Wilton to get the coloring right. Pretty simple, and it was actually really delicious. "Jimmies" (or sprinkles) on the balls made that section a big hit! Dress this cake up or down. It would probably be good sprinkled with some powdered sugar or drizzled with some ganache, but mine needed to be FROSTED obviously.
2 sticks unsalted butter, firm but not cold
1/8 tsp salt
3 1/2 cups confectioners' sugar, sifted
1/2 tsp vanilla
1/2 tsp milk
Beat the butter and salt on medium speed until light and fluffy. Reduce the speed to low, gradually add sugar and beat until incorporated. Add vanilla and milk and beat until smooth and creamy. The frosting should be creamy and dense, like ice cream. Add additional milk, 1 tsp at a time, if frosting does not have a spreadable consistency.