Ingredients 3 tablespoons extra-virgin olive oil (plus 2 tablespoons, if using mushrooms), plus more for drizzling 1 recipe Grandma Pizza Dough Kosher salt and freshly ground pepper 8 ounces cremini mushrooms, thinly sliced (about 2 3/4 cups), or 6 ounces sliced pepperoni (1 1/2 cups), or a combination (4 ounces mushrooms, 3 ounces pepperoni) 2 cups Easy Pizza Sauce 1 pound low-moisture mozzarella, such as Polly-O, shredded (3 1/2 cups) 1 tablespoon lightly packed chopped fresh oregano Preparation Preheat oven to 500 degrees, with rack in lower third lined with a pizza stone or baking sheet....