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Slow Cooker Homemade Spaghetti Sauce

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  • Prep Time: 15 minutes
  • Cook Time: 8 hours on low
  • Total Time: 0 hours
  • Yield: 6 cups of sauce 1x


A meaty slow cooker spaghetti sauce that takes minutes to get going and then simmers all day in your crockpot. I like to serve this sauce over any pasta or over spaghetti squash.


  • 1 lb ground Italian sausage (I use mild)
  • 1 medium yellow onion, diced
  • 1 (28 oz) can crushed tomatoes
  • 1 (14.5 oz) can diced tomatoes
  • 2 Tbsp tomato paste
  • 1 bay leaf
  • 2 tsp dried basil
  • 1 tsp garlic powder
  • 1/2 tsp dried oregano
  • 1 tsp brown sugar
  • Salt and pepper


  1. Heat a pan over medium high heat on the stove. Add in the sausage and break it up with a wooden spoon. Brown the meat for about 5 minutes and then add in the onions and cook for about 3 more minutes. Transfer the meat and onions to the slow cooker.
  2. Add in the crushed tomatoes, diced tomatoes, tomato paste, bay leaf, basil, garlic powder, oregano and brown sugar. Stir.
  3. Cover and cook on low for 8 hours. Remove the lid and stir. Salt and pepper to taste.
  4. Serve the sauce over pasta or spaghetti squash.


I cooked my spaghetti on the stove. I reserved a little of the pasta water, about 1/2 cup, and stirred it into the sauce. This helps the sauce stick to the pasta.

I used my 6 quart oval Kitchenaid slow cooker.*

  • Category: Sauce
  • Method: Slow Cooker


  • Serving Size: 1/2 cup of sauce
  • Calories: 145
  • Sugar: 4 g
  • Sodium: 551 mg
  • Fat: 9 g
  • Carbohydrates: 8 g
  • Protein: 7 g