Tater Tot Breakfast Casserole

Tater Tot Breakfast Casserole Ingredients: 2 lb Italian Sausage 1 (30-32oz) bag Frozen Tater Tots 1 tsp Salt 1/2 tsp Pepper 1/4 tsp Garlic Powder 1/4 tsp Onion Powder 1-1/2 cups Shredded Cheddar Cheese 1/2 cup Mozzarella Cheese 8 Eggs 2 cups Milk 1 cup Onion, chopped