Microwave Tuna Casserole

Prep: 10 min Cook: 13 min Serves: 4 Cuisine: American

A creamy microwave tuna casserole combining tender noodles, savory tuna, and vegetables, perfect for a quick comforting meal that suits busy weeknights or casual gatherings.

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Ingredients

  • 2 small cans tuna
  • noodles, cooked
  • 1 onion, chopped
  • 1/2 to 1 cup chopped celery
  • 1 stick oleo
  • 1 can cream of mushroom soup
  • 3/4 cup milk

Instructions

  1. Saute chopped onions and chopped celery in a stick of oleo in the microwave for 5 minutes.
  2. Combine cooked noodles, tuna, cream of mushroom soup, milk, and the onion-celery mixture.
  3. Set the microwave to Roast and cook for 8 minutes.

Tips & Substitutions

For a creamier texture, consider adding a handful of shredded cheese to the mixture before microwaving. You can substitute the tuna with canned salmon or shredded chicken if desired. If you don’t have cream of mushroom soup, a homemade white sauce or a different cream soup can work in a pinch. To enhance flavor, add a dash of garlic powder or pepper.

Serving Suggestions

Serve this microwave tuna casserole with a side of steamed vegetables or a fresh green salad for a balanced meal. It pairs beautifully with Tuna Salad Sandwiches for a light lunch option. For an extra touch, sprinkle some fresh herbs or a squeeze of lemon juice on top before serving.

Storage & Reheating

Leftover tuna casserole can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, simply place it in the microwave for 2-3 minutes or until heated through. If it seems dry, add a splash of milk before reheating to restore moisture.

Nutrition & Diet Analysis (per serving)

Each serving of Microwave Tuna Casserole contains roughly 316 calories, with 10g protein, 48g carbohydrates, and 10g fat. It is an excellent source of iron (22% of the Daily Value) and protein (21% of the Daily Value), and a good source of calcium and vitamin C. Note that it is relatively high in sodium, at 646mg per serving (28% of the Daily Value).

316 kcal 16% DV
Protein Fat Carbs

Macronutrients

Protein 10.4g 21% DV
Total Fat 9.9g 13% DV
Carbs 47.6g 17% DV
Fiber 2.4g 9% DV
Sugar 24.7g 49% DV

Electrolytes

Sodium 645.6mg 28% DV
Potassium 487.5mg 10% DV
Cholesterol 12.7mg 4% DV

Vitamins & Minerals

Vitamin A 116.2mcg 13% DV
Vitamin C 13.5mg 15% DV
Vitamin D 1.1mcg 5% DV
Calcium 242.6mg 19% DV
Iron 4mg 22% DV
Diet fit Under 400 cal Low-fat
Contains Milk Wheat/Gluten Fish

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I make this casserole ahead of time?

Yes, you can prepare the casserole a day in advance. Assemble all the ingredients and store it in the refrigerator, then microwave it just before serving. This is a great way to save time on busy days.

What kind of noodles work best in this recipe?

Any type of cooked noodles will work well, but egg noodles or macaroni are particularly popular choices. They hold up nicely in casseroles and complement the creamy sauce perfectly.

Can I freeze the tuna casserole?

While it's best enjoyed fresh, you can freeze the casserole before cooking. Just cover it tightly with foil and store for up to 2 months. Thaw it in the refrigerator overnight before microwaving.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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