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Slow Cooker Spaghetti Casserole

  • Author:
  • Total Time: 260 minutes


  • 2 lbs. ground beef
  • 1 1/2 teaspoons salt
  • 1 small onion, chopped
  • 8 oz. spaghetti, broken into pieces
  • 1 jar (24 oz) tomato & basil pasta sauce
  • 1 (14.5 oz) can dice fire-roasted tomatoes
  • 1/2 cup water
  • 1 teaspoon Italian seasoning
  • 2 cups shredded sharp cheddar cheese
  • Freshly grated Parmesan cheese
  • Salt & Pepper to taste


  1. Cook ground beef, salt and onion in a large skillet. Drain and set aside.
  2. Lightly grease a 5-qt. slow cooker and spoon half of the meat mixture into bottom. Top with uncooked spaghetti noodles. Spoon remaining half of meat mixture over top.
  3. In a medium bowl, combine pasta sauce, diced tomatoes, 1/2 cup water and Italian seasoning. Pour over meat, making sure all pieces of spaghetti noodles are covered.
  4. Cover and cook on low for 2 hours. After 2 hours, remove lid and sprinkle cheese on top. Cover and continue cooking on low for an additional 2 hours.
  5. Let stand 10 minutes before serving. Serve with freshly grated Parmesan cheese. Season with salt & pepper to taste, if needed.
  • Prep Time: 20 minutes
  • Cook Time: 240 minutes
  • Category: Pasta