How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Crock Pot Marinara Sauce?

You need 10 ingredients. The key ingredients include: 2 (28 ounce) cans Italian-style crushed tomatoes, 1 (6 ounce) can tomato paste, 1 large onion, chopped, 8 garlic cloves, finely chopped, and more.

Is Crock Pot Marinara Sauce suitable as pasta & noodles?

Yes, Crock Pot Marinara Sauce falls under the Pasta & Noodles category and is a great choice for this type of meal.

How do I store leftover Crock Pot Marinara Sauce?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Crock Pot Marinara Sauce Recipe

Name: Crock Pot Marinara Sauce
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 (28 ounce) cans Italian-style crushed tomatoes; 1 (6 ounce) can tomato paste; 1 large onion, chopped; 8 garlic cloves, finely chopped; 1 tablespoon olive oil or 1 tablespoon vegetable oil; 2 teaspoons Splenda sugar substitute; 1 teaspoon oregano leaves; 1 teaspoon salt; 1 teaspoon pepper; ½ cups whole wheat spaghetti

Try this homemade Crock Pot Marinara Sauce recipe the whole family will love. Made with Italian-style, tomato paste, onion and garlic. Easy step-by-step…

This Crock Pot Marinara Sauce relies on simple, everyday ingredients such as (6 ounce) can tomato paste, large onion, chopped, splenda sugar substitute and oregano leaves. It comes together quickly and makes 4 servings, at about 368 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Pasta & Noodles

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.

No specific allergen information. Please check the ingredient list for possible allergens.

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Crock Pot Marinara Sauce

Tips for the best results

Variations & substitutions

My Personal Notes

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Frequently Asked Questions