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 Grandma Smith'S Tuna Casserole?

You need 12 ingredients. The key ingredients include: 2 (6 ounce) cans canned tuna, drained, 2 (10 1/2 ounce) cans cream of mushroom soup, 1 cup sour cream, 1 cup mayonnaise, and more.

Is Grandma Smith'S Tuna Casserole suitable as seafood?

Yes, Grandma Smith'S Tuna Casserole falls under the Seafood category and is a great choice for this type of meal.

How do I store leftover Grandma Smith'S Tuna Casserole?

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

Grandma Smith'S Tuna Casserole Recipe

Name: Grandma Smith'S Tuna Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 (6 ounce) cans canned tuna, drained; 2 (10 1/2 ounce) cans cream of mushroom soup; 1 cup sour cream; 1 cup mayonnaise; 1 cup cheddar cheese, grated; 4 -5 cups macaroni, cooked and hot; 1 cup carrot, coarsely grated; 1 cup celery, thinly sliced; 1/4 cup green onion, thinly sliced; 2 cups frozen peas; salt and pepper; crushed potato chips, for topping (optional)

Try this homemade Grandma Smith'S Tuna Casserole recipe the whole family will love. Made with tuna, cream of mushroom soup, sour cream and mayonnaise. E…

This Grandma Smith'S Tuna Casserole relies on simple, everyday ingredients such as sour cream, mayonnaise, cheddar cheese, grated and macaroni, cooked and hot. It comes together quickly and makes 4 servings, at about 844 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 Seafood

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

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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Grandma Smith'S Tuna Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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