Thin Spaghetti Casserole

Prep: 15 min Cook: 30 min Serves: 6 Cuisine: American

A hearty casserole combining tender thin spaghetti, savory ground beef, and creamy mushroom and tomato soups, topped with melted cheese—perfect for comforting family dinners.

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Ingredients

  • 1/2 lb. thin spaghetti
  • 1 lb. ground beef
  • 1/2 cup chopped onion
  • 1/4 cup chopped green pepper
  • 2 Tbsp butter or margarine
  • 1 (10 1/2 oz.) can condensed cream of mushroom soup
  • 1 (10 3/4 oz.) can condensed tomato soup
  • 1 can water
  • 1 clove garlic, minced
  • 1 cup shredded process cheese

Instructions

  1. Cook thin spaghetti in 3 quarts of salted boiling water for 8 to 10 minutes.
  2. Drain and rinse the spaghetti.
  3. Brown ground beef and cook onion and green pepper in butter until vegetables are tender.
  4. Stir to separate meat particles.
  5. Add condensed mushroom soup, tomato soup, water, and minced garlic; heat through.
  6. Blend with 1/2 cup shredded cheese and cooked spaghetti in a 3-quart casserole.
  7. Top with remaining shredded cheese.
  8. Bake at 350°F for 30 minutes or until bubbling and hot.

Tips & Substitutions

For a creamier texture, try adding a splash of milk or cream to the sauce before combining with the spaghetti. You can also substitute ground turkey or chicken for the beef for a lighter option. If you're short on time, pre-cooked spaghetti can be used. For those who prefer a vegetarian version, omit the meat and add extra vegetables like mushrooms or zucchini. This casserole is similar to a Browning Quiche in its hearty filling.

Serving Suggestions

Serve this casserole hot, garnished with fresh parsley or basil for added color. A side salad or steamed vegetables pairs nicely, providing a fresh contrast to the richness of the dish. For a comforting meal, consider serving it alongside garlic bread or a slice of Meat Loaf(From Recipes For Diabetics). This dish also makes for great leftovers, perfect for busy weeknight dinners.

Storage & Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place in a preheated oven at 350°F for about 20 minutes or until heated through. You can also microwave individual portions for a quick meal, ensuring they are heated evenly to avoid cold spots.

Nutrition & Diet Analysis (per serving)

Each serving of Thin Spaghetti Casserole contains roughly 417 calories, with 20g protein, 32g carbohydrates, and 23g fat. It is an excellent source of vitamin C (42% of the Daily Value) and protein (39% of the Daily Value), and a good source of iron and calcium. Note that it is relatively high in sodium, at 785mg per serving (34% of the Daily Value).

417 kcal 21% DV
Protein Fat Carbs

Macronutrients

Protein 19.6g 39% DV
Total Fat 23.3g 30% DV
Carbs 32.1g 12% DV
Fiber 2g 7% DV
Sugar 3.2g 6% DV

Electrolytes

Sodium 785.5mg 34% DV
Potassium 435.4mg 9% DV
Cholesterol 64.9mg 22% DV

Vitamins & Minerals

Vitamin A 68.4mcg 8% DV
Vitamin C 38.2mg 42% DV
Vitamin D 0.1mcg 1% DV
Calcium 170.9mg 13% DV
Iron 3.4mg 19% DV
Contains Milk

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 it completely, cover it tightly, and refrigerate. When you're ready to bake, allow it to sit at room temperature for about 30 minutes before baking as directed. This makes it a great option for meal prep or gatherings.

What can I use instead of cream of mushroom soup?

If you don't have cream of mushroom soup, you can substitute it with a homemade white sauce or use cream of chicken soup for a different flavor. For a dairy-free option, try a dairy-free cream soup or simply blend silken tofu with vegetable broth and seasonings.

Can I freeze this spaghetti casserole?

Yes, this casserole freezes well. Make sure to cool it completely before wrapping it tightly with plastic wrap and aluminum foil. It can be frozen for up to 3 months. To reheat, thaw in the refrigerator overnight and bake at 350°F until heated through.

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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