*Place frozen dough on a greased pizza pan. Cover with sprayed plastic wrap and let thaw at room temperature for 4-5 hours.
Use a rolling pin to roll the dough into a circle the size of the pizza pan. Spread softened butter on top.
Use a food processor or blender to crush Oreo cookies into fine crumbs. Sprinkle the crumbs over the butter and use your hand to flatten/adhere the crumbs to the butter.
Preheat oven and bake at 425 degrees Fahrenheit for 16-18 minutes. Until crust is brown on the edges and on the bottom. Cool to room temperature.
In a large bowl with a hand mixer, beat the cream cheese and butter until smooth. Add the powdered sugar, vanilla, and milk. Blend together. Fill a sandwich bag with the frosting. Cut off a small corner of the bag with scissors.
Pipe the frosting like you would cut the pizza, keeping consistent pressure as you squeeze each line all the way across. Then connect the lines with a rounded “U” shape in three complete circles. (Refer to pictures in post.)
Use a pizza cutter to slice pizza into 16 pieces. Serve immediately. Can keep leftovers covered at room temperature.