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Close up of a ladle filled with marinara with a crock of marana blurred in the background
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4.50 from 2 votes

Lazy Slow Cooker Marinara Sauce Recipe

Slow cooker marinara sauce is beyond delicious and you won't believe how easy it is to make. Perfect for pasta, chicken, meatballs and more. This simple recipe, made mostly from pantry staples, is great to make and freeze so you will always have some on hand.
Prep Time15 mins
Cook Time8 hrs
Total Time8 hrs 15 mins
Course: dinner, lunch, Main Course, Side Dish
Cuisine: Italian
Keyword: crockpot marinara, crockpot red sauce, crockpot spaghetti sauce, easy marinara sauce, honemade marinara sauc, slow cooker marinara sauce
Servings: 6 servings
Calories: 82kcal


  • 2 tablespoon olive oil
  • 1 cup chopped onion
  • 1 tablespoon minced garlic
  • 2 28 oz cans diced tomato (I like to buy the kind with onion and garlic in it for extra flavor, but this is optional)
  • 1 28 oz can crushed tomato
  • 1 14 oz can whole peeled tomato
  • 1 6 oz can tomato paste
  • 1 teaspoon oregano
  • 1 tablespoon dried basil
  • 2-3 bay leaves
  • 1.5 teaspoon kosher salt
  • ½ teaspoon fresh ground pepper
  • 2-3 pieces Parmesan rind This is optional, but if you aren't vegan or dairy free, I think it really adds to the flavor.


  • Add first 3 ingredients into slow cooker and let them get started cooking on high while opening the cans and gathering all remaining ingredients together
  • add remaining ingredients and stir.
  • add Parmesan rinds if using (optional) and stir to incorporate
  • Turn slow cooker down to low and cook for 8 - 12 hours
  • remove cheese rinds and use immersion blender if you prefer a smoother consistency.


Calories: 82kcal | Carbohydrates: 9g | Protein: 2g | Fat: 5g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Sodium: 808mg | Potassium: 360mg | Fiber: 2g | Sugar: 5g | Vitamin A: 446IU | Vitamin C: 9mg | Calcium: 42mg | Iron: 2mg