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Tuna Mushroom Casserole

23 reviews
Contest Ribbon Contest Winner
Test Kitchen Approved
Total Time

Prep: 30 min. Bake: 25 min.

Makes

6 servings

Updated: Mar. 26, 2023
I love to serve this dressed-up version of a tuna casserole. The green beans add nice texture, color and flavor. The first time I made this dish, my uncle asked for seconds even though tuna casseroles are not usually his favorite. —Jone Furlong, Santa Rosa, California
Tuna Mushroom Casserole
Tuna Mushroom Casserole Recipe photo by Taste of Home
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Ingredients

  • 1/2 cup water
  • 1 teaspoon chicken bouillon granules
  • 1 package (9 ounces) frozen cut green beans
  • 1 cup chopped onion
  • 1 cup sliced fresh mushrooms
  • 1/4 cup chopped celery
  • 1 garlic clove, minced
  • 1/2 teaspoon dill weed
  • 1/2 teaspoon salt
  • 1/8 teaspoon pepper
  • 4 teaspoons cornstarch
  • 1-1/2 cups cold whole milk
  • 1/2 cup shredded Swiss cheese
  • 1/4 cup mayonnaise
  • 2-1/2 cups egg noodles, cooked and drained
  • 1 can (12 ounces) light tuna in water, drained and flaked
  • 1/3 cup dry bread crumbs
  • 1 tablespoon butter

Directions

  1. In a large saucepan, bring water and bouillon to a boil; stir until bouillon is dissolved. Add the next eight ingredients; bring to a boil. Reduce heat; cover and simmer until vegetables are tender, about 5 minutes.
  2. In a small bowl, combine cornstarch and milk until smooth; gradually add to vegetable mixture. Bring to a boil; cook and stir until thickened, about 2 minutes. Remove from the heat; stir in cheese and mayonnaise until cheese is melted. Fold in noodles and tuna.
  3. Pour into a greased 2-1/2-qt. baking dish. In a small skillet, brown bread crumbs in butter; sprinkle over casserole. Bake, uncovered, at 350° until heated through, 25-30 minutes.

Nutrition Facts

1 each: 343 calories, 15g fat (5g saturated fat), 57mg cholesterol, 770mg sodium, 27g carbohydrate (7g sugars, 2g fiber), 24g protein.