1-Step 1: Preheat and Prep the Dish Preheat oven to 425°F (218°C). Coat a 13 x 9 inch (33 x 23 cm) baking dish with cooking spray. This high heat gives your hearty pizza casserole pie that golden crust fast.

2-Step 2: Brown the Meat and Onion In a large nonstick skillet, cook 1 pound ground meat with 1/2 cup chopped onion until browned. Drain excess fat. This builds flavor for the base layer.

3-Step 3: Add Sauce and Mushrooms Return meat to skillet. Stir in 1 teaspoon minced garlic, 1 (15 ounce) can chunky tomato sauce, and drained 1 (4 ounce) can sliced mushrooms. Heat through. Let flavors blend 2-3 minutes. Omit mushrooms or add pepperoni here if desired.

4-Step 4: Form the Crust Unroll 1 (10 ounce) can refrigerated pizza dough. Press into prepared dish, covering bottom and edges halfway up sides. This creates the deep dish effect for your cheesy pizza casserole.

5-Step 5: Assemble and First Bake Spread meat-sauce mixture evenly over dough. Bake uncovered at 425°F (218°C) for 12 minutes. The crust starts to set.

6-Step 6: Add Cheese and Finish Baking Sprinkle 1 1/2 cups shredded cheese over top. Bake 5 more minutes until cheese melts and crust browns. Watch closely for your perfect doneness.

7-Step 7: Rest and Serve Let rest 5-10 minutes. This makes slicing easy and flavors settle. Serve hot. Total time: about 35 minutes. Pairs great with tossed salad or roasted veggies.