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A slow cooker filled with vibrant red tomato sauce, garnished with chopped green herbs. A striped kitchen towel and fresh parsley are partially visible on the side.
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4.19 from 69 votes

Crockpot Spaghetti Marinara Sauce Recipe

Tomato sauce made in the slow cooker is easy and takes no guesswork - it cooks all day and you don't even have to think about it!
Prep Time20 minutes
Cook Time10 hours
Total Time10 hours 20 minutes
Course: Main Course
Cuisine: American
Servings: 10 cups
Author: Dorothy Kern
Cost: $8

Ingredients

  • 1 stalk celery
  • 1 medium yellow onion peeled
  • 1 medium carrot peeled
  • 4 cloves garlic peeled
  • 2 28 ounce cans crushed tomatoes
  • 6 ounces tomato paste
  • 2 cups chicken stock or water
  • 2 tablespoons honey
  • 2 bay leaves
  • 1 teaspoon Kosher salt
  • ½ teaspoon ground pepper
  • ½ teaspoon dried basil
  • ½ teaspoon dried oregano
  • ½ teaspoon dried thyme
  • ¼ teaspoon red pepper flakes

Instructions

  • Place celery, onion, carrot, and garlic in a food processor and chop until fine. Heat 1 tablespoon olive oil in a small skillet over medium heat and cook the vegetables for about 5 minutes, or until tender. Remove from heat and place in a 5-7 quart crockpot insert.
  • Add the crushed tomatoes, tomato paste, chicken stock or water, honey, and all spices to the crockpot insert. Stir to combine. Cover and cook on low heat 8-10 hours.
  • Before serving, taste and add additional salt or pepper as desired.
  • Store in refrigerator for up to 3 days or freeze for up to one month.

Video

Notes

Brown sugar, granulated sugar, or agave can be substituted for the honey.

Nutrition

Serving: 1/16th recipe | Calories: 53kcal | Carbohydrates: 12g | Protein: 3g | Sodium: 142mg | Fiber: 3g | Sugar: 8g

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