To begin, preheat your oven to 350 and spray a round 15" pizza pan with no stick spray (or use a stone pan).
Dump your cookie dough onto your pan and gently work the dough and spread it out into one, thin, even layer, leaving 2 inches of pan showing all around the edge (as the cookie pizza will spread while it bakes). You can press extra chocolate chips and sprinkles on top of the dough prior to baking too, for an extra pretty cookie pizza.
Bake in the oven for 15-18 minutes, or till the edges are set and the middle looks a little underdone. The middle may also be a little raised, but should settle down as it cools.
Remove, and let cool entirely.
Frost around the edges, and add extra sprinkles on top of the frosting. Slice, and serve! Devour.
*The Cookie Pizza slices taste the best within the first 3 days. After that they begin to dry out.
*The calorie count is for the Cookie Pizza slices alone, without frosting. It's also calculated for 10 slices, although my pictures show 8 large slices.