Delicious Slow Cooker Tomato Sauce Recipe

Slow Cooker Tomato Sauce — a italian recipe (condiments and sauces) with 10 ingredients. Source: edamam.com.

Medium
Updated March 20, 2026

490

Total Time (min)

6

servings

225

Calories/serving

Medium

Difficulty

Delicious Slow Cooker Tomato Sauce Recipe

Ingredients

Servings:
6
  • 2 tablespoons olive oil
  • 1 large onion, diced
  • 4 cloves garlic, minced
  • 2 cans crushed tomatoes (28 oz each)
  • 1 teaspoon sugar (to balance acidity)
  • 1 tablespoon dried oregano
  • 1 tablespoon dried basil
  • 1 teaspoon salt
  • 1 teaspoon black pepper
  • 1 bay leaf

Instructions

5 steps

  1. Sauté Onions and Garlic

    In a skillet, heat olive oil over medium heat. Add diced onions and sauté until translucent, about 5 minutes. Stir in minced garlic and cook for another minute.

    Do not let the garlic burn.
  2. Combine Ingredients

    In the slow cooker, combine sautéed onions and garlic with crushed tomatoes, sugar, oregano, basil, salt, black pepper, and bay leaf.

    Stir well to mix all ingredients.
  3. Set Slow Cooker

    Cover the slow cooker and set it on low for 6-8 hours or high for 3-4 hours.

    The longer it cooks, the more the flavors will develop.
  4. Taste and Adjust

    Once cooking time is complete, taste the sauce and adjust seasoning if needed. Remove the bay leaf before serving.

    Add more sugar if the sauce is too acidic.
  5. Serve

    Serve the tomato sauce over pasta, use it as a base for pizza, or store for later use.

    This sauce can be frozen for up to 3 months.

💡 Tips & Tricks

Health: Vegan, Vegetarian, Pescatarian, Dairy-Free, Gluten-Free, Wheat-Free. Diet: Balanced, High-Fiber

Storage & Reheating

❄️

Refrigerator

Up to 3 days in an airtight container

🧊

Freezer

Up to 2 months — thaw overnight in fridge

🔥

Reheat in a skillet or microwave until heated through.

What to Serve With

Complete your italian meal with these perfect pairings:

🍽️Garlic bread
🍽️Caesar salad
🍽️Roasted vegetables

About This Dish

Delicious Slow Cooker Tomato Sauce Recipe is a beloved dish from Italian cuisine. With a total preparation time of about 490 minutes, it is a rewarding project for when you have extra time in the kitchen.

Italian cuisine is renowned worldwide for its emphasis on simple, quality ingredients and time-honored techniques. Each region of Italy has its own distinct culinary traditions, passed down through generations.

This recipe is rated medium difficulty and uses 10 ingredients. Intermediate cooks will enjoy the balanced challenge.

Frequently Asked Questions

Yes, you can use fresh tomatoes. Use about 3 pounds, peeled and chopped.

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Nutrition Facts

6 serving(s) per recipe

Serving size1 serving
Calories120kcal
Total Fat6gg
Sodium300mgmg
Total Carbohydrates14gg
Dietary Fiber3gg
Total Sugars4gg
Protein3gg

* Percent Daily Values are based on a 2,000 calorie diet. Values are approximate and may vary based on ingredients used.

Recipe Details

CuisineItalian