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This slow cooker spaghetti sauce recipe is like having an Italian grandma in your kitchen preparing dinner for you all day. The fresh tomatoes and mushrooms simmer for hours with Italian sausage and fresh basil.

There’s no canned sauce, paste or veggies in this dish.

Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous

When you come home after a busy day, the warm fragrant pot of sauce is ready for a final touch of Parmesan cheese to thicken the sauce and cooked pasta. Now that’s amore.

I’ve mentioned this before, but I’m in love with my Breville Fast-Slow Cooker. It has a sear setting on it, so I can brown the sausage and sauté the veggies. Then, I just add in the tomatoes, wine and spices and switch from sear to slow cook.

One pot = less dishes = happy cook!

How long you cook the sauce is up to you and your schedule. Since the sausage is cooked in advance, you could serve it up in an hour. But I recommend going with 6-8 hours on low for really blended, yet defined flavors.

If you don’t have a slow cooker, no problem. You can cook it in a large pot with a lid over medium-low heat…but you’ll need to be home to keep an eye on the stove…unless you happen to have an Italian grandma around who will take care of dinner for you.

Buon appetito!

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Garden-fresh Slow Cooker Spaghetti Sauce

Servings: 6 servings

Ingredients 

  • 1 lb. Italian Sausage
  • 1 yellow onion, chopped
  • 4 cloves garlic, chopped
  • 8 ozs. sliced mushrooms, portabella or crimini
  • 12 Roma tomatoes, chopped
  • 2 tablespoons chopped fresh basil
  • ½ cup red wine
  • 1 tablespoon capers
  • 1 tsp. kosher salt
  • 1 tsp. black pepper
  • ½ tsp. red pepper flakes, optional
  • 1 cup shredded Parmesan cheese
  • 1 13.25- oz. box spaghetti noodles

Instructions 

  • Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous
  • In a large pot, brown the sausage over medium-high heat.
  • Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous
  • Add the onions and garlic to the pot and sauté until tender, 2-5 minutes.
  • Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous
  • Add the sliced mushrooms and sauté until tender, about 5 minutes.
  • Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous
  • Transfer the sausage and vegetables into the pot of a slow cooker. Add in the tomatoes, basil, red wine, capers, salt, pepper and red pepper flakes. Cook on low for 6-8 hours. (You can serve it sooner, but the sauce will develop more flavor the longer you cook it.)
  • Just before dinner, cook the box of spaghetti noodles in salted water until al dente.
  • Open the slow cooker and stir in ¾ cup Parmesan cheese to thicken the sauce.
  • Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous
  • Drain the noodles and pour them into the sauce. Stir to combine thoroughly.
  • Garden-fresh Slow Cooker Spaghetti Sauce from Zestuous
  • Spoon into a serving bowl and top with the remaining Parmesan cheese.

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

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Christie Vanover

About Zestuous

Hi. I’m Christie, the head cook and award-winning competitive pitmaster for Team Girls Can Grill. I have won multiple grand championships and have dozens of top ten category finishes. People know me as the girl who is forever hovering over a grill, smoker or campfire with tongs in one hand and a glass of wine in the other.


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