How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Potato Au Gratin Casserole ?

You need 10 ingredients. The key ingredients include: 1 (2 pound) package frozen diced hash browns, 1 stick margarine or butter, 1 cup onion, chopped, 8 ounces shredded low-fat cheddar cheese, and more.

Is Potato Au Gratin Casserole suitable as soups & stews?

Yes, Potato Au Gratin Casserole falls under the Soups & Stews category and is a great choice for this type of meal.

How do I store leftover Potato Au Gratin Casserole ?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Potato Au Gratin Casserole Recipe

Name: Potato Au Gratin Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 (2 pound) package frozen diced hash browns; 1 stick margarine or butter; 1 cup onion, chopped; 8 ounces shredded low-fat cheddar cheese; 1 can cream of chicken soup; 1 teaspoon garlic salt; 1 pint sour cream; Topping:; 2 cups Corn Flakes; 1/2 stick margarine

Try this homemade Potato Au Gratin Casserole recipe the whole family will love. Made with hash browns, margarine, onion and low-fat. Easy step-by-step i…

This Potato Au Gratin Casserole relies on simple, everyday ingredients such as margarine or butter, onion, chopped, cream of chicken soup and garlic salt. It comes together quickly and makes 4 servings, at about 773 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It works as a light main on its own or as a starter alongside crusty bread, and it's just as good for a cozy night in as it is for feeding a crowd. Leftovers keep well, so it's a smart choice for meal prep too.

Updated Jun 30, 2026

Serves 4 Soups & Stews

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Potato Au Gratin Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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