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Featured image of a scoop of baked spaghetti casserole lifted out of white baking dish.
5 from 5 votes

Baked Spaghetti with Cream of Mushroom Soup

Author: Ashley Leonard
This baked spaghetti casserole with cream of mushroom soup takes all the comforting flavors of classic spaghetti and transforms them into a creamy, cheesy pasta bake with ground beef and plenty of melted cheese. It’s an easy, family-friendly dinner perfect for busy weeknights.
Prep Time:15 minutes
Cook Time:30 minutes
Total Time:45 minutes
Course: Main Course
Cuisine: Italian
Keyword: baked spaghetti, spaghetti casserole
Servings: 8 servings

Ingredients

  • 1 pound spaghetti noodles
  • 1 tbsp. olive oil
  • 1 pound ground beef
  • 1 white onion chopped, about 1 cup
  • 1 green pepper chopped, about 1 cup
  • 1 tsp. salt
  • ½ tsp. black pepper
  • ½ tsp. garlic powder
  • 10.5 oz. can cream of mushroom soup
  • 23.5 oz. jar spaghetti sauce
  • 2 tsp. Italian seasoning
  • 2 cups mozzarella cheese shredded

Instructions

  1. Preheat oven to 350 degrees. Cook spaghetti al dente*.
    1 pound spaghetti noodles
  2. While pasta is cooking, heat oil in a large skillet. Add ground beef, season with salt and pepper & break apart into small pieces. Continue cooking until meat is no longer pink. Drain any grease from the hamburger.
    1 tbsp. olive oil, 1 pound ground beef , 1 tsp. salt, 1/2 tsp. black pepper, 1/2 tsp. garlic powder
  3. Add onion and green pepper and saute for another 3-4 minutes.
    1 white onion, 1 green pepper
  4. Add cooked noodles, spaghetti sauce, cream of mushroom soup and Italian seasoning to the meat mixture
    10.5 oz. can cream of mushroom soup, 23.5 oz. jar spaghetti sauce, 2 tsp. Italian seasoning
  5. Pour mixture into a greased 9x13 baking dish and sprinkle with mozzarella cheese.
    2 cups mozzarella cheese
  6. Bake 30-35 minutes until heated through and cheese is melted.

Notes

  • To cook the pasta al dente, boil the noodles for 2 minutes less than the shortest time listed on the box directions. This ensures the pasta doesn't get too mushy baking in the oven. 
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