This post may contain affiliate links. For more information, read my disclosure policy.
To make an easy marinara sauce, you need this Slow Cooker Spaghetti Sauce recipe. It is a delicious, smooth, and fresh tomato sauce that cooks all day in the slow cooker so it has that cooked all day taste. It’s perfect for pasta night or you can freeze it for quick weeknight dinners!
Whenever I’m craving comfort food, I think about this slow cooker tomato sauce recipe. It reminds me of my childhood except this recipe is made in a crockpot so I don’t have to watch it; it cooks itself!
If you are a regular here, then you know I love my slow cooker recipes. They are almost effortless and always come out delicious. This slow cooker spaghetti sauce recipe is no different. Gone are the days when you have to stick to your kitchen for hours to stir and taste: set this and forget it. When you come home after this has been cooking all day you’ll feel like you’re in an Italian restaurant!
Ingredients Needed
- 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: Use a good quality brand, like Hunt’s or San Marzano. I also add tomato paste.
- Honey: A little sweetness helps cut the acidity of the tomatoes.
- Chicken Stock: This makes the flavor taste so deep, but you can also use water or vegetable stock or even beef stock.
- Spices: Gotta add tons of spice! I usually add salt, pepper, basil, oregano, thyme, and red pepper flake.
How to make Crockpot Spaghetti Sauce
- 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 quickly.
- Dump: Once the vegetables are soft, add them to a crockpot along with diced 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.
- The Slow Cooker Spaghetti Sauce cooks all day and is perfect for serving with pasta, chicken marinara, or freezing in jars.
- Can you make this a meat sauce? To make homemade spaghetti sauce with Italian sausage or ground beef, you’ll want to cook the meat first and drain the fat. You can add it to the crockpot with all the other ingredients or leave it plain and add meat as desired when serving.
Expert Tips
- Use fire-roasted cans of tomato sauce for even more flavor! Regardless of what kind of diced 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 good chicken stock, not broth. Use Trader Joe’s, O Organics, or Kitchen Basics (those are my favorites).
- I use dried herbs in this spaghetti 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, or even a few teaspoons of sugar.
Crockpot Spaghetti Marinara Sauce Recipe
Recipe Video
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.
Recipe Notes
- You can freeze crockpot spaghetti sauce in plastic containers or jars for up to 3 months.
- Brown sugar, granulated sugar, or agave can be substituted for the honey.
Hello I’m from australia, how much does 2 28 ounces of crushed tomatoes need to be in grams or ml. I am having trouble converting this.
The next week will be a busy week, I will try this sauce tomorrow. Thank you for sharing the recipe!
I used to make my pasta sauce with big pot, stirring diligently for 4 hours. The recipe is similar to yours, just using fresh basil for the herbs, no bay leaves. Then I add a couple of spoon of butter in the end and let it melt. Wonderful….
But last week, I found my Mom’s slow cookers…..3 slow cookers, that she bought in the 80s, and almost never used….I know…., now I’m so excited to use them.
Most of the pasta sauce that using slow cooker didn’t even add water or stock to it. And without sweating at least the onion. Plus, pasta sauce with out the celery and carrot has no depth. Your recipe makes a lot of sense.
Thank you for the recipe.
Thank you for the weight watcher freestyle points! I’m making your tomato sauce this weekend!! And I appreciate the wwfs!
thank you
Birdie
Oh, this looks WONDERFUL! Our fifteen year-old son with special needs, and who is an extremely picky eater, loves pasta with tomato sauce. I’ve been looking for a good, homemade recipe to help him to eat healthier. I was wondering, do you have any directions for making this in an Instant Pot? We got one for Christmas and it’s great. Thanks for posting!
Featured In
Rate This Recipe
Recipe Ratings without Comment