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 Tomato Tuna Casserole?

You need 7 ingredients. The key ingredients include: 19 12 ounces red pasta sauce (any flavor will do if you choose onion you can skip the onion), 1 (8 ounce) can tuna, 2 (8 ounce) boxes macaroni and cheese mix (preferably Kraft ^.^), ½ cup milk, and more.

Is Tomato Tuna Casserole suitable as seafood?

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

How do I store leftover Tomato Tuna Casserole?

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

Tomato Tuna Casserole Recipe

Name: Tomato Tuna Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 19 12 ounces red pasta sauce (any flavor will do if you choose onion you can skip the onion); 1 (8 ounce) can tuna; 2 (8 ounce) boxes macaroni and cheese mix (preferably Kraft ^.^); ½ cup milk; ½ cup butter; 1 cup diced onion; 1 tablespoon butter (for caramelizing onions)

Try this homemade Tomato Tuna Casserole recipe the whole family will love. Made with pasta sauce, tuna, macaroni and milk. Easy step-by-step instruction…

This Tomato Tuna Casserole relies on simple, everyday ingredients such as (8 ounce) can tuna, milk, butter and diced onion. It comes together quickly and makes 4 servings, at about 2263 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

Servings: persons

19 12 ounces red pasta sauce (any flavor will do if you choose onion you can skip the onion)
1 (8 ounce) can tuna
2 (8 ounce) boxes macaroni and cheese mix (preferably Kraft ^.^)
½ cup milk
½ cup butter
1 cup diced onion
1 tablespoon butter (for caramelizing onions)

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Quick Info

Servings
4 servings
Calories
2263 kcal
Category
Seafood

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