Cauliflower Tot Casserole

Name: Cauliflower Tot Casserole
Ingredients: 1 tbsp butter; 1 small onion, diced; 1 lb ground hamburger or turkey; 1 can cream of mushroom soup; 1 can cream of chicken soup; 2 cans green beans, liquid drained; 1/2 tsp cumin; 1 tsp garlic powder; Salt and pepper, to taste; 1 bag cauliflower tots; Optional: 1 cup grated cheddar cheese