Heat oven to 350°F. Line cookie sheet with foil. Spray lightly with cooking spray.
Unroll dough. Using 4-inch round cutter, cut 10 circles from dough. (Note: You will have to gather and roll out dough scraps to get 10 from the dough). Place on cookie sheet.
Bake 4 minutes. Top each with 1/2 teaspoon butter, 1/4 teaspoon garlic salt, 1 tablespoon mozzarella cheese and 1 teaspoon Parmesan cheese.
Bake 5 to 7 minutes or until golden brown.
Serve immediately, or cool completely and refrigerate in airtight container until ready to eat.