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 Western Beef Casserole Au Gratin?

You need 14 ingredients. The key ingredients include: 1 lb. lean ground beef, 1/3 c. chopped onion, 1 (8 oz.) can tomato sauce, 1/4 tsp. garlic powder, and more.

Is Western Beef Casserole Au Gratin suitable as meat & poultry?

Yes, Western Beef Casserole Au Gratin falls under the Meat & Poultry category and is a great choice for this type of meal.

How do I store leftover Western Beef Casserole Au Gratin?

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

Western Beef Casserole Au Gratin Recipe

Name: Western Beef Casserole Au Gratin
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 lb. lean ground beef; 1/3 c. chopped onion; 1 (8 oz.) can tomato sauce; 1/4 tsp. garlic powder; 1/4 tsp. salt; 1/8 tsp. pepper; 1 (11 oz.) can whole kernel corn, drained; 2 c. water; 3 Tbsp. margarine; 1/2 tsp. salt; 3/4 c. milk; 2 pkg. mashed potato flakes (Idaho brand); 1 (4 oz.) can chopped green chillies, drained; 2 c. grated Cheddar cheese

Try this homemade Western Beef Casserole Au Gratin recipe the whole family will love. Made with lean ground beef, onion, tomato sauce and garlic powder.…

This Western Beef Casserole Au Gratin relies on simple, everyday ingredients such as lean ground beef, chopped onion, (8 oz.) can tomato sauce and garlic powder. It comes together quickly and makes 4 servings, at about 909 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Meat & Poultry

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

Feel free to swap in similar ingredients you already have on hand and adjust seasoning to taste.

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

My Personal Notes

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Western Beef Casserole Au Gratin

Tips for the best results

Variations & substitutions

My Personal Notes

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Frequently Asked Questions