Preheat Oven Preheat your oven according to the directions on your pre-made pizza crust package, or to 375°F (190°C).
Prepare Topping In a medium bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy. Stir in the vanilla extract.
Add Chocolate Chips Stir in the semi-sweet chocolate chips and white chocolate chips into the butter/sugar mixture until evenly distributed.
Spread on Crust Place the pre-made pizza crust on a baking sheet. Spread the chocolate chip mixture evenly over the pizza crust, leaving a small border for the edge.
Bake Bake for 10-15 minutes, or until the crust is golden brown and the chocolate chips are melted and the topping is slightly set. Baking time will vary based on your oven and crust type.
Cool Slightly Let the dessert pizza cool on the baking sheet for a few minutes before slicing.
Serve Slice and serve warm.