Tater Tot Casserole

Name: Tater Tot Casserole
Prep time: 10 min
Cook time: 50 min
Total time: 1 h
Cuisine: American
Ingredients: 1 white onion (diced); 1 lb ground beef; 1 tbs worcestershire sauce; 1/2 tsp thyme; 1 dash onion powder; 1 dash garlic powder; 1 dash salt and pepper; 1 can cream of mushroom soup; 2/3 cup milk; 1 bag frozen tater tots; 1 cup cheddar cheese