Add the ground beef, chopped onion, rice, minced garlic, chopped peppers, tomato paste, drained can of diced tomatoes, Worcestershire sauce, and seasonings to a large resealable freezer bag.
Remove the excess air from the bag and seal.
Put shredded cheese in medium freezer bag, remove the air, and staple to the large freezer bag above the seal. Freeze.
Dump the contents of the large freezer bag in the casserole dish and spread out evenly. Top with the cheese.