Crockpot Spaghetti Sauce (2024)

Jump to Recipe

Crockpot spaghetti sauce is the easiest way to make homemade marinara that tastes like it’s from Nonna’s kitchen. This hearty slow cooker spaghetti sauce is a reader favorite from the Yummy Mummy Kitchen cookbook!

Crockpot Spaghetti Sauce (1)

Friends have been requesting more slow cooker/crockpot and Instant pot recipes lately. I totally get it – it’s a busy time of year, but we still want to eat well and have comforting homemade meals. One friend recently mentioned that she and her family love my recipe for crockpot spaghetti sauce in the Yummy Mummy Kitchen cookbook. So naturally, I wanted to share this recipe with you.

One of my most popular recipes here on the blog is my Fresh Tomato Marinara (actually that ties with my salsa). I love making our Italian spaghetti sauce with homegrown or farmers market tomatoes, but that’s just not realistic year-round. I almost always have all the ingredients for crockpot spaghetti sauce in the pantry and fridge.

Crockpot Spaghetti Sauce (2)

If you have your own copy of the Yummy Mummy Kitchen cookbook, you can head over to page 137 for the recipe. If you don’t have a copy and would like this recipe in a hardback book form, you can get the book at your local bookstore. Amazon is an easy place to get it as well. Full disclosure, this is an affiliate link below, which means I make a small commission.

Crockpot Spaghetti Sauce Nutrition

While there’s something special about homemade Italian spaghetti sauce, I do use store-bought jars in a pinch. Those, however, often have added fat and sugar, so it’s always a good idea to check the ingredients. When you make marinara at home in the slow cooker (or Instant Pot), there’s no need to add fat or sugar. The veggies themselves add any needed sweetness.

Crockpot Spaghetti Sauce (3)

Crockpot Spaghetti Sauce Ingredients

I add lots of fresh vegetables like carrots, celery, onion, and bell pepper to this Italian sauce. They give it a deeper flavor and are and easy way to get more vitamins and minerals into our kids’ diets. If you have mushrooms or zucchini you’d like to use up, feel free to toss those in too.

Crockpot Spaghetti Sauce (4)

I roughly chop the veggies and toss them in the slow cooker. They will be pureed at the end, so it doesn’t matter what they look like. In fact, one of the tips in my book is that you can chop these ingredients in a food processor (helpful if you have a toddler on your hip like I did when creating the recipe).

For the most authentic Italian sauce flavor I like to use whole peeled San Marzano plum tomatoes. They most often come in large cans, but you can sometimes find them in jars too. I crush them up the old fashioned way – with my hands. A fun albeit messy job for little ones to help with.

How to Make Spaghetti Sauce in the Crockpot

Crockpot Spaghetti Sauce (5)

Making crockpot spaghetti sauce is as simple as tossing the ingredients in the pot and setting it for 6 hours. Once all the veggies are tender, let the sauce cool a bit so that that you aren’t burned by any splatters. Then use an immersion blender to puree the sauce. Taste and add more salt and pepper if desired. A splash of red wine or balsamic is a nice flavor addition as well.

Instant Pot Instructions

As you can see in this image above, I used my Instant Pot on the slow cook setting. I found that this has lower heat then my crockpot slow cooker, so it wasn’t quite ready after 6 hours. If you want to use your Instant Pot, you can slow cook, and then cook on high pressure for 5 minutes to finish. I like this method because then you can toss your favorite meatballs (I used Gardien meatless meatballs) in on simmer after blending at the end. You can also pressure cook this sauce for 20 minutes on manual mode, then 5 minutes natural pressure release. If you love the Instant Pot, check out a few of these favorites: Instant Pot Lentil Soup, Instant Pot Minestrone, and Instant Pot Veggie Chili.

Crockpot Spaghetti Sauce (6)

How to Serve Crockpot Spaghetti Sauce

While spaghetti is the obvious answer, it’s not the only option. Spaghetti Squash, Lasagna Stuffed Portobello Mushrooms, Vegan Lasagna, and Lasagna Soup would all be wonderful with this sauce. Or try addingVeggie Lentil Meatballs or a dollop of Vegan Ricotta on top!

More Easy Crockpot Recipes to Love

  • Applesauce
  • Slow Cooker or Instant Pot Steel Cut Oats
  • Minestrone Soup
  • Veggie Chili
  • Split Pea Soup
  • Black Bean Soup
  • Black Beans

Crockpot Spaghetti Sauce (7)

Yield: about 6 cups

Crockpot Spaghetti Sauce

Prep Time10 minutes

Cook Time6 hours

Total Time6 hours 10 minutes

A hearty marinara spaghetti sauce secretly loaded with veggies and slow cooked to perfection in the crockpot. This crockpot spaghetti sauce has no added sugar or fat.

Crockpot Spaghetti Sauce (8)

Ingredients

  • 2 carrots, chopped
  • 2 celery stalks, chopped
  • 1 yellow onion, chopped
  • 1 red bell pepper, chopped
  • 4 cloves garlic, chopped
  • 2 (28 oz.) containers whole peeled San Marzano plum tomatoes, drained and crushed with your hands*
  • 2 tablespoons tomato paste
  • 1 bay leaf
  • 1 cup fresh basil, chopped
  • 1/2 teaspoon sea salt
  • 1/8 teaspoon red pepper flakes

Instructions

  1. Place all the prepped ingredients in the slow cooker crockpot or Instant Pot.
  2. Set the slow cooker crock pot to low for 6 hours or high for 4 hours.
  3. For the Instant Pot, set to manual for 20 minutes with the valve sealing, then natural pressure release for 5 minutes before carefully removing the lid.
  4. Let the chunky sauce cool enough so that you wouldn't be burned by any splatters. Use an immersion blender to puree the sauce, or carefully blend in an upright blender in batches. Add salt and pepper to taste. A splash of balsamic vinegar is a nice flavor addition as well.
  5. Serve over your favorite pasta, zucchini noodles, or in lasagna.

Notes

*I drain most of the juice/sauce from the tomatoes but keep some so that the tomatoes are still juicy. Just a quick drain of most of the liquid is sufficient. Nutrition information is approximate and calculated by a third party app.

Nutrition Information:

Yield: 6Serving Size: 1/6 recipe
Amount Per Serving:Calories: 74Carbohydrates: 17gProtein: 3g

Crockpot Spaghetti Sauce (2024)

FAQs

How do you keep a sauce from going watery in a slow cooker? ›

A cornstarch slurry is a mixture of a cold liquid with cornstarch. It is used as a thickening agent, and is particularly common in Asian sauces. As a rule of thumb, dissolve 2 parts cold water and 1 part cornstarch. Add the slurry to your sauce as it simmers in the slow cooker.

Does taking the lid off a slow cooker thicken the sauce? ›

Take the lid off

Place the cooker on a high setting, and open the lid for 30-45 minutes to let excess moisture cook off. The liquid will reduce, leaving you with a thick and delicious gravy or sauce. (Tip: This trick can also be applied for thickening stews, or when you've accidentally added too much liquid.)

How to thicken spaghetti sauce in a slow cooker? ›

Cornstarch, potato starch, and chickpea flour are a couple of pantry-friendly ways to thicken soups, stews, and sauces in the slow cooker. Just a tablespoon or two of any — added towards the end of cooking — will thicken sauces especially well.

Does spaghetti sauce get better the longer you cook it? ›

Time Is a Valuable Ingredient

But you should consider simmering for three or more hours, letting it lazily cook away, no more than a few straggling bubbles surfacing at a time. Time plus low heat and fresh ingredients make for a great sauce.

How do you fix liquidy pasta sauce? ›

Cornstarch: Make a slurry of half water, half cornstarch and whisk until smooth. Cornstarch is a powerful thickener, so start by whisking in no more than 1 tablespoon of the mixture per 2 cups of simmering sauce; stir and simmer for 2 minutes, check the thickness, and repeat with more slurry as needed.

Is 4 hours on high the same as 8 hours on low? ›

Low: 7-8 hours to reach the simmer point. High: 3-4 hours to reach the simmer point.

Does sauce thicken better with or without a lid? ›

When to Keep the Lid Off. Cooking a soup, stew, or sauce uncovered allows water to evaporate, so if your goal is to reduce a sauce or thicken a soup, skip the lid. The longer you cook your dish, the more water that will evaporate and the thicker the liquid becomes—that means the flavors become more concentrated, too.

How to stop food from going watery in a slow cooker? ›

Use flour to thicken sauces

You can roll meat in a small amount of seasoned flour before adding it to the slow cooker or use a little cornflour at the end. If you want to do the latter, take a teaspoon or two of cornflour and mix it to a paste with a little cold water.

How long does it take for homemade spaghetti sauce to thicken? ›

Cook It Down

It means bringing the sauce to a boil, reducing the heat, and letting the sauce simmer gently until it reaches your desired consistency. That might be 20 minutes or an hour—perhaps even longer.

Will spaghetti sauce thicken as it cools? ›

Your sauce has completed cooking when it has reached your desired thickness (consistency) and taste. Keep in mind sauces, especially in the cases of reduced sauces made with sugar and gelatin, will continue to thicken as they cool.

Will spaghetti get mushy in crockpot? ›

Broth-based slow cooker dinners need their dry pasta added at just the right moment — add the pasta too early and your noodles will be mushy before they get to the table. Adding dry pasta 30 to 4o minutes before serving means you'll have perfectly cooked pasta in your soup.

How to deepen the flavor of spaghetti sauce? ›

Tossing in strips of basil, a sprig of thyme or some oregano can take your sauce to the next level. Although fresh herbs might pop a bit more, dried herbs and spices can work just as well. Sprinkling in some red pepper flakes, a pinch of parsley and a dash of salt and pepper can liven up your jarred pasta sauce.

Why put butter in spaghetti sauce? ›

Add butter

Yes, that's right. Toss in a few tablespoons of butter, and let it melt into the sauce. If you've never tried it before, it might seem strange, but a little butter makes tomato sauce rich and smooth, and also balances out too much acidity, which is common in jarred sauces.

What adds richness to spaghetti sauce? ›

Just as we like to simmer pasta in its sauce with a little bit of the pasta-cooking water for the last few minutes of cooking, we also like to enrich most sauces with a final glug of fresh olive oil, a pat of butter, and/or a big handful of finely grated cheese like Parmigiano-Reggiano or Pecorino Romano.

How to stop a slow cooker from being watery? ›

okay, secondly, you can put a tea towel under the lid. that will capture some of the moisture, it stops it circulating in the slow cooker. and then thirdly, you can use a corn flour slurry, so into a bowl, a little bit of corn flour, cold water, mix it with your finger, pour it in, stir it. you're done.

How do you reduce water activity in sauces? ›

Solutes: Water activity is decreased by adding solutes such as salt or sugar (Ex: jams, cured meats).

How do you reduce water in sauce? ›

Reduction is performed by simmering or boiling a liquid, such as a stock, fruit or vegetable juice, wine, vinegar or sauce, until the desired concentration is reached by evaporation. This is done without a lid, enabling the vapor to escape from the mixture.

Top Articles
Latest Posts
Article information

Author: Edmund Hettinger DC

Last Updated:

Views: 6681

Rating: 4.8 / 5 (78 voted)

Reviews: 85% of readers found this page helpful

Author information

Name: Edmund Hettinger DC

Birthday: 1994-08-17

Address: 2033 Gerhold Pine, Port Jocelyn, VA 12101-5654

Phone: +8524399971620

Job: Central Manufacturing Supervisor

Hobby: Jogging, Metalworking, Tai chi, Shopping, Puzzles, Rock climbing, Crocheting

Introduction: My name is Edmund Hettinger DC, I am a adventurous, colorful, gifted, determined, precious, open, colorful person who loves writing and wants to share my knowledge and understanding with you.