Name: Creamy hash brown casserole
Prep time: 10 min
Cook time: 50 min
Yield: 8
Cuisine: American
Ingredients: 60g butter, plus more for dish; 1 onion, chopped; 1 (450g) container sour cream; 1 (300g) tin cream of celery soup; 1 (125g) packet grated Cheddar cheese; 1 (125g) packet grated Monterey Jack cheese; 1/2 tsp garlic powder; 1 (850g) package frozen shredded hash brown potatoes, thawed; 1 tsp salt; 1/2 tsp ground black pepper; 120g crushed potato crisps