Venison Casserole

Name: Venison Casserole
Prep time: 30 min
Cook time: 55 min
Total time: 1 h 25 min
Cuisine: American
Ingredients: 1 lb ground venison; 1 small onion (diced); 1 tsp salt; 1 tsp ground black pepper; 1 tsp garlic and onion powder; 2 tbsp of butter (melted); 5 medium size potatoes (peeled and diced); ½ cup sour cream; 1 can cream of mushroom soup (10.5 oz); 2 cups shredded cheddar cheese (divided)