Meaty Marinara Sauce in a shallow white serving dish with a wooden spoon covered in sauce laying in front of it and to three tomatoes on a brown towel and a jar of more sauce to the side behind the dish all on a wooden surface

Meaty Marinara Sauce in the Slow Cooker

Use the slow cooker to make your own homemade marinara sauce with more flavor and texture than the store-bought alternative.
Course Homemade Staple
Cuisine American, Italian
Keyword ground beef, sauce, slow cooker, tomato
Prep Time 15 minutes
Cook Time 5 hours
Total Time 5 hours 15 minutes
Servings 4 cups
Calories 312kcal
Author Stephanie Lynch



  • 1/2 lb ground beef
  • 1/4 lb Italian sausage
  • 1/2 onion chopped
  • 1 clove garlic minced
  • 10 white mushrooms
  • 1 green bell pepper
  • 16 oz diced tomatoes
  • 16 oz tomato sauce
  • 1/2 tsp oregano
  • 1/2 tsp basil
  • 1/8 tsp pepper
  • 1/8 tsp salt


  • In a medium skillet, cook the ground beef, sausage, chopped onion, and minced garlic until the meat is brown and the onion is tender, stirring occasionally, about 10 minutes
  • Meanwhile, prepare the rest of the vegetables by chopping the mushrooms and green pepper
  • Place the tomatoes, tomato sauce, mushrooms, green pepper, and seasonings in the slow cooker
  • Stir in the cooked meat mixture
  • Cover and cook on low for 10-12 hours or high for 5-6 hours
  • Let the sauce cool just a bit before using
  • Leftovers can be frozen once completely cooled


Calories: 312kcal | Carbohydrates: 15g | Protein: 18g | Fat: 20g | Saturated Fat: 7g | Cholesterol: 61mg | Sodium: 927mg | Potassium: 1044mg | Fiber: 4g | Sugar: 9g | Vitamin A: 735IU | Vitamin C: 45.3mg | Calcium: 71mg | Iron: 4.1mg