Hearty Tuna Casserole


This tuna noodle casserole with sour cream may not be the same as your grandma's tuna casserole, but it's sure to please everybody in the family.

close up view of Hearty Tuna Casserole with zucchini slices and toasted cheese on top, in a blue and white baking dish, with salad in the background
Prep Time:
15 mins
Cook Time:
45 mins
Total Time:
1 hrs
1 2-quart casserole


  • cooking spray

  • 3 cups uncooked egg noodles

  • 2 (5 ounce) cans tuna, drained

  • ½ cup chopped celery

  • cup chopped green onions

  • ½ cup mayonnaise

  • cup sour cream

  • 2 teaspoons prepared mustard

  • ½ teaspoon dried thyme

  • ¼ teaspoon salt

  • 1 small zucchini, thinly sliced

  • 1 cup shredded Monterey Jack cheese

  • 1 medium tomato, chopped


  1. Preheat the oven to 350 degrees F (175 degrees C). Spray a 2-quart casserole dish with cooking spray.

  2. Fill a large pot with lightly salted water and bring to a rapid boil. Cook egg noodles at a boil until tender yet firm to the bite, 7 to 9 minutes. Drain and transfer to a large mixing bowl.

  3. Add tuna, celery, and green onions to the noodles. Stir in mayonnaise, sour cream, mustard, thyme, and salt until well combined.

  4. Spoon 1/2 of the noodle mixture into the prepared casserole dish, then layer 1/2 of the zucchini slices over top. Repeat layers once more, then sprinkle Monterey Jack cheese over the entire casserole.

  5. Bake in the preheated oven until hot and bubbly, about 30 minutes.

  6. Remove from the oven and sprinkle with chopped tomato before serving.

Nutrition Facts (per serving)

356 Calories
25g Fat
16g Carbs
19g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 356
% Daily Value *
Total Fat 25g 31%
Saturated Fat 8g 39%
Cholesterol 56mg 19%
Sodium 364mg 16%
Total Carbohydrate 16g 6%
Dietary Fiber 2g 5%
Total Sugars 2g
Protein 19g
Vitamin C 8mg 40%
Calcium 184mg 14%
Iron 2mg 11%
Potassium 308mg 7%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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