weeknight baked spaghetti casserole

5 Pinches
Deep In The Heart of, TX
Updated on May 6, 2025

A great way to wow your guests or family. All you need is bread and a delicious salad. Leftovers are even better.

prep time 30 Min
cook time 35 Min
method Bake
yield 8 serving(s)

Ingredients

  • 1/2 cup onion, chopped
  • 1 cup mushrooms, sliced
  • 2-3 tablespoons butter
  • 1 can whole tomatoes, cut up with liquid (28 oz)
  • 1 can sliced black olives (2.25 oz)
  • 2 teaspoons dried oregano
  • 1 pound ground beef
  • 12 ounces spaghetti noodles, cooked
  • 2 cups cheddar cheese, shredded
  • 1 can cream of mushroom soup (10.5 oz)
  • 1/4 cup water
  • 1/2 cup grated Parmesan cheese

How To Make weeknight baked spaghetti casserole

  • Step 1
    Melt butter in a skillet and saute onions until soft. Add sliced mushrooms (and additional butter, if needed) and saute. Remove onions and mushrooms to a plate.
  • Step 2
    Add ground beef to the skillet and cook until no longer pink.
  • Step 3
    Combine onions, mushrooms, tomatoes, black olives, and simmer.
  • Step 4
    Place 1/2 of the cooked spaghetti noodles in a prepared deep 13 x 9 casserole dish. T
  • Step 5
    op noodles with 1/2 of the sauce mixture. Sprinkle 1/2 cheddar cheese over the sauce mixture.
  • Step 6
    Repeat layers one more time.
  • Step 7
    Combine the cream of mushroom soup with water and stir well. Pour the soup mixture over the casserole. Sprinkle Parmesan cheese over the top.
  • Step 8
    Bake casserole, uncovered, at 350 degrees for 30-35 minutes or until bubbly and Parmesan is lightly toasted.

Discover More

Ingredient: Beef
Method: Bake
Culture: American
Category: Casseroles

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