Easy Upside-Down Pizza Casserole

Details

Ingredients

• 1 ½ pounds lean ground beef
• 1 (15 ounce) can pizza sauce
• 1 (4 ounce) can sliced mushrooms, drained
• ¼ cup sliced pitted ripe olives
• 1 cup shredded mozzarella cheese, or more to taste
• 1 (10 ounce) can refrigerated biscuit dough