2 large onions, chopped
1 (10 ounce) package frozen hash brown potatoes, thawed
1 (12 ounce) can tomato sauce
2 tablespoons butter
10 ounces sour cream
Melt onions and garlic powder. Stir in the hash brown potatoes, tomato sauce, butter and sour cream in a slow cooker.
Cover, and cook on low for 6 hours.