Preheat oven to 350°F. Spray a pizza pan (12-13” diameter) with cooking spray. If you don’t have a pizza pan you can use a 9” round pan or a 9x13” pan but baking times will be affected.
Use a hand or a stand mixer to mix the cake mix, butter, and egg. It takes a few minutes, depending on your mixer, for the ingredients to come together in a thick dough. Press the dough into the bottom of your prepared pan.
Bake for about 8-10 minutes until the cookie loses it’s glossy sheen. Cool completely before continuing.
To make the topping, mix the softened cream cheese, powdered sugar, and vanilla with a hand mixer until smooth. Fold in whipped topping by hand. Spread on cooled pizza cookie. Top with fruit in desired pattern.
Once fully assembled, this should be eaten the same day it’s made. You can make the cookie up to 2 days before serving and wrap it well with plastic wrap.