Preheat oven to 425 degrees.
Heat olive oil in 12-inch skillet over medium heat and cook mushrooms, salt and black pepper, stirring occasionally, 3 minutes or until mushrooms are golden. Remove mushrooms and set aside.
Arrange pizza crusts on ungreased baking sheet. Evenly top with Sauce, then mushrooms and cheeses. Bake 15 minutes or until cheese is melted.
TIP: Recipe can be halved.