Preheat oven to 475°F (245°C). Preheat pizza stone if using.
Mix ricotta, Parmesan, heavy cream, salt, black pepper, and garlic powder in a bowl.
Roll out pizza dough into a 12-inch circle on a floured surface.
Transfer dough to parchment-lined baking sheet or preheated pizza stone.
Brush dough with olive oil, leaving a 1-inch border.
Spread white sauce evenly over dough, leaving a 1-inch border.
Sprinkle mozzarella cheese evenly over white sauce.
Add desired toppings evenly over cheese.
Bake for 15-20 minutes, until crust is golden brown and cheese is bubbly.
Let pizza cool for a few minutes before slicing and serving.