1/2 cup all-purpose flour
1/2 cup whole wheat flour
1/2 tsp baking powder
1/4 tsp salt
1/2 cup unsalted butter, softened
1/2 cup sugar
1 large egg
1 tsp vanilla extract
icing, food coloring, "toppings"
Preheat the oven to 375F. Spray a 9-inch springform pan with cooking spray.
Combine the flours, baking powder, and salt in a small bowl. Cream the butter and sugar together in a stand mixer until smooth. Beat in the egg and vanilla extract, scraping down the sides as needed, until smooth. Add in the flour mixture and beat until a dough forms.
Turn the dough into the springform pan and press it into an even layer on the bottom of the pan (wetting your hands will help you do this without all the dough sticking to you!). Bake until golden, about 12 minutes. Remove from oven and let cool. Decorate with icing died red and yellow to look like sauce and cheese, and add toppings!
(I used a royal icing, but a buttercream would be yummy, too. Or buy frosting in a can and dye it. Decorating is the fun part, so have your kids help!)