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This is the BEST EVER Crockpot Tomato Sauce! It’s easy to make marinara sauce in your slow cooker, the perfect homemade spaghetti sauce recipe for any dinner.

Whenever I’m craving comfort food I think about pasta sauce. It reminds me of childhood except this recipe is made in a crockpot so I don’t have to watch it; it cooks itself!

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tomato sauce on pasta on a white plate

BEST Homemade Tomato Sauce Recipe

As a kid, my mom and dad would make spaghetti sauce a few times a year. It was an all day event that would take place on a Saturday and start early in the morning. I remember watching my mom brown sausage and cut vegetables, then pour all the ingredients into a big stock pot and simmer them all day long, stirring and tasting, until it was perfect. “I always add a bit of honey,” my dad would whisper to me, “it just adds a little something to the sauce.”

The BEST part about this crockpot recipe is just that: it’s made in the slow cooker. Gone are the days where you have to stick to your kitchen for hours to stir and taste: set this and forget it. Plus, when you come home after a day of work your house will smell incredible, like an Italian kitchen.

How to make Crockpot Tomato Sauce Video

tomato sauce in slow cooker with a ladle

Marinara vs Tomato Sauce vs Spaghetti Sauce

I always wondered why marinara was called marinara and other sauces were called Ragu or Spaghetti Sauce. Basically all tomato sauces are just that: sauce with tomato as a base.

I learned as a young cook in my mom’s kitchen that Ragu is generally made with meat whereas marinara is often smooth, without meat or chunks (although I think it can also be just how each different cook interprets it).

Smooth, without chunks, no meat, that’s my kind of sauce. Tomato Sauce, Marinara, Spaghetti Sauce, it doesn’t matter; it’s all good when you pile it on pasta.

Ingredients in Crockpot Tomato Sauce

Celery, Onion, Carrot: I use these as a vegetable base for my sauce.

Garlic: REQUIRED! I love tons of fresh garlic in spaghetti sauce.

Crushed Tomatoes: It’s easiest for me to make crushed tomato sauce – so simple.

Honey: A little sweetness helps cut the acidity of the tomatoes.

Chicken Stock: Makes the flavor taste so deep, but you can also use water or vegetable stock.

Spices: Gotta add tons of spice! I usually add: salt, pepper, basil, oregano, thyme and red pepper flake.

homemade marinara in jar with greens

How to make Tomato Sauce in the crockpot

  1. Vegetables: I start my sauce with carrots, onions, celery, and garlic. I chop them small in a food processor so the sauce is fine and not chunky. Prepare the size of the vegetables as you wish, but a food processor or blender helps you chop them quick.
  2. Dump: Once the vegetables are soft, you add them to a crockpot along with crushed tomatoes, chicken stock, tomato paste, and lots of herbs and spices. I also follow the advice of my dad and “add a little honey” for sweetness.
  3. Cook: Then just let it simmer away all day. You don’t need to watch it, the crockpot handles it all.

How much spaghetti sauce does this recipe make?

This recipe makes about 10 cups of sauce, which is perfect for two big batches of pasta for a large Sunday dinner, or you can portion it in jars for smaller weeknight dinners. It’s good on all the things, as I say: meatballs, ravioli, spaghetti, manicotti, baked penne…or even just warm to dip some nice crusty garlic bread in.

You won’t be able to help yourself, so be sure to prepare a big batch of pasta for dinner the night you make this. Then freeze the rest for later. This is also a great crockpot tomato sauce for canning, although I’ve never done that. I just add the leftover to a jar or a Tupperware and freeze it for the next time I want homemade pasta sauce.


  • Want a vegetarian spaghetti sauce? Use water or vegetable stock instead of chicken stock. I just like using stock because it adds a depth of flavor to the sauce that water doesn’t give. If you have a homemade stock, by all means, use that.
  • I’ve never made this with fresh tomatoes but you sure can. I’d peel them first, though, and crush them well, unless you want a chunky sauce.
  • Skip the crockpot and make this on the stove in a large pot. Just simmer, stir occasionally and let it cook for a few hours.
closeup of tomato sauce in jar

More tips for the perfect crockpot tomato sauce:

  • Use a fire roasted canned tomato for even more flavor! Regardless of what kind of crushed tomatoes you use, be sure to use a GOOD brand. I buy store brands for lots of things, but not tomato sauce. I like Contadina, Hunt’s, or San Marzano for this recipe.
  • Likewise, be sure to buy a good chicken stock, not broth. Use Trader Joe’s, O Organics, or Kitchen Basics (those are my favorites).
  • I use dried herbs in this sauce; the long cooking time can be rough on fresh herbs.
  • Be sure to taste for salt/pepper towards the end of cooking. I don’t like adding a ton of salt so if you need to add some, go ahead.
  • Don’t have honey? Use agave or maple syrup instead.

This slow cooker tomato sauce is perfect for serving with meatballs, a vegetarian spaghetti dish, or even over meatloaf or for a meatball sandwich. It’s flavorful and like a hug in a jar!

Other Recipes to Try

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tomato sauce in slow cooker

The BEST Crockpot Tomato Marinara Sauce

4.04 from 58 votes
This is the BEST EVER Crockpot Tomato Sauce! It’s easy to make marinara sauce in your slow cooker, the perfect homemade spaghetti sauce recipe for any dinner.
Prep Time 20 minutes
Cook Time 10 hours
Total Time 10 hours 20 minutes
Yield 10 cups
Serving Size 1 /16th recipe


  • 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
  • 1/2 teaspoon ground pepper
  • 1/2 teaspoon dried basil
  • 1/2 teaspoon dried oregano
  • 1/2 teaspoon dried thyme
  • 1/4 teaspoon red pepper flakes


  • 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.

Recipe Video

Recipe Nutrition

Serving: 1/16th recipe | Calories: 53kcal | Carbohydrates: 12g | Protein: 3g | Sodium: 142mg | Fiber: 3g | Sugar: 8g
Nutritional information not guaranteed to be accurate
Course Main Course
Cuisine American
ladle with sauce

Homemade Crockpot Tomato Sauce – this easy marinara is the perfect spaghetti sauce made in the slow cooker!

**Did you make this recipe? Don’t forget to give it a star rating below!**

Last Updated on August 28, 2021

Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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  1. Hi Dorothy!
    I love your recipes & am subscribed to both notifications & emails.

    I was wondering whether you would consider adding a “Cook Mode” widget just above the actual recipe? That way we could actually assemble & measure etc ingredients without our device screens “blacking” out – which I sooo frustrating. Thanks!

    1. OOOH that’s a great idea! I’m having a whole site redesign done in 2022 so I’ll add that to my wishlist for the developer.

  2. Incredibly delicious marinara! It really is the best and better than any store-bought marinara I’ve ever had… and so easy to make! Huge thank you for such a kick ass recipe.