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 Oniony Tuna Casserole?

You need 9 ingredients. The key ingredients include: 2 (7 oz.) cans tuna (undrained), 2 (10 oz.) cans cream of onion soup, 2 to 3 c. cooked pasta, 1 (4 oz.) can sliced drained mushrooms, and more.

Is Oniony Tuna Casserole suitable as seafood?

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

How do I store leftover Oniony Tuna Casserole?

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

Oniony Tuna Casserole Recipe

Name: Oniony Tuna Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 (7 oz.) cans tuna (undrained); 2 (10 oz.) cans cream of onion soup; 2 to 3 c. cooked pasta; 1 (4 oz.) can sliced drained mushrooms; 2 Tbsp. lemon juice; 1/4 tsp. ground thyme; 1/4 tsp. salt; 1/2 tsp. pepper; 1 (3 1/2 oz.) can French fried onion rings

Try this homemade Oniony Tuna Casserole recipe the whole family will love. Made with tuna, cream of onion soup, pasta and mushrooms. Easy step-by-step i…

This Oniony Tuna Casserole relies on simple, everyday ingredients such as to 3 c. cooked pasta, lemon juice, ground thyme and salt. It comes together quickly and makes 4 servings, at about 434 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

2 (7 oz.) cans tuna (undrained)
2 (10 oz.) cans cream of onion soup
2 to 3 c. cooked pasta
1 (4 oz.) can sliced drained mushrooms
2 Tbsp. lemon juice
1/4 tsp. ground thyme
1/4 tsp. salt
1/2 tsp. pepper
1 (3 1/2 oz.) can French fried onion rings

Frequently Asked Questions

Quick Info

Servings
4 servings
Calories
434 kcal
Category
Seafood

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