Slow Cooker Pasta Sauce

slow cooker pasta sauce next to spaghetti
Author: Heather
Category: Main Dishes
Published Date: 02/25/2021
Comments: 56

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Our family eats a lot of pasta. And for years, I’ve bought marinara sauce in a jar because it’s fast and convenient. But these days, we are trying to be more mindful about what we eat, so I started making homemade slow cooker pasta sauce.

Aside from it being incredibly delicious, I love that it doesn’t have the added preservatives that a jar sauce contains. I’m also able to put in as many vegetables as I’d like for added nutrition.

You add everything to your slow cooker in the morning or afternoon, and it’s ready for dinner. If you have a smaller family, you can store the remaining sauce in a jar, in the refrigerator for a week, or freeze it in a freezer-safe container for up to a month and use when needed.

bowl of slow cooker pasta sauce with fresh basil

close up of spaghetti sauce

This slow cooker pasta sauce is the first of many healthier option recipes that I’m going to be sharing.  And the story behind them is one I had to share (it wouldn’t be a food blog if there wasn’t a story behind it, right?)

I know how hard it is to find recipes that are both healthy and taste delicious. A few weeks ago, I reached out to a long-time friend, Rachel DiNapoli to see if she wanted to take our family’s favorite recipes and make them healthier.

Our family has known Rachel for about ten years, back when she was dancing at the same dance studio as our daughters. She later became one of their favorite dance teachers.

These days, Rachel is a fitness trainer and helps people to lose weight and eat better. Rachel is a NASM certified personal trainer (National Academy of Sports Medicine) and boot camp instructor in Boca Raton, FL. She is the proud owner of FAITH, WEIGHTS, PROTEIN SHAKES LLC, an online training and nutrition company. 

Rachel was 50 pounds overweight and after losing weight by eating healthy and exercising, she now uses her own personal health and fitness journey to help others.  In addition to encouragement, motivation, and exercise routines, she also shares tips and tricks to healthier eating on her Instagram page @rachdinafit

bowl of slow cooker pasta sauce

bowl of slow cooker pasta sauce with fresh basil

You can dice your veggies according to how chunky you like your pasta sauce but remember the larger the chunks, the longer they will need to cook. If you’re running short on time and you chopped your veggies a little too big (or you like to hide the veggies from your kids), you can put the sauce into a food processor or blender when it’s done, for a smoother consistency.

I also use my food processor to shred the carrots. This will save you lots of time over hand grating them. For the onions and the celery, I hand chop them.

This slow cooker pasta sauce is great over pasta. If you prefer real pasta over zucchini noodles, Rachel recommends Barilla ProteinPLUS Multigrain Spaghetti. I’ve had it a few times now and my family really loves it. It doesn’t taste any different than regular pasta, it’s just 100% Plant-based protein and non-GMO, so it’s a better, healthier option.

It would also be great on top of chicken with a side of veggies! We love ours with my healthier oven-baked meatballs, another recipe I worked with Rachel. 

Side note… you’ll want to pick up one of these clip-on pan strainers. The best tool I’ve purchased in a while! Just clip it onto your pot and strain your pasta. I absolutely love it. 

plate of spaghetti

steps on how to make slow cooker pasta sauce

The steps in the photos above, show exactly how I make my slow cooker pasta sauce.

Step 1: All veggies and spices in the slow cooker.

Step 2: Mix all ingredients in step one together and add crushed tomatoes.

Step 3: Add vegetable stock.

Step 4: Stir until combined and slow cook for 4-5 hours.

Now that you know a little bit about this slow cooker pasta sauce, I’m excited to share our recipe.

Slow Cooker Pasta Sauce

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slow cooker pasta sauce next to spaghetti

Slow Cooker Pasta Sauce

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 26 reviews

  • Author: Heather l The Super Mom Life
  • Total Time: 4 hours 10 minutes
  • Yield: 6 servings 1x


This slow cooker pasta sauce is packed with veggies and tastes better than any sauce you can buy in the store. Only 77 calories per serving.


  • 28oz can crushed tomatoes
  • 1 cup vegetable stock
  • 1/2 cup diced Vidalia onion
  • 1 cup grated carrots
  • 1 cup diced celery
  • 1 tbsp minced garlic
  • 1 bay leaf
  • 1 tbsp dried basil
  • 1/2 tbsp dried parsley
  • 1 tsp kosher or sea salt
  • 1/2 tsp crushed red pepper flakes, optional
  • fresh basil for topping, optional


  • Place all ingredients into your slow cooker and stir until combined.
  • Cover and cook on low for 4-5 hours.
  • Serve on top of pasta, meatballs, or any healthy alternative.
  • Top with fresh basil, if desired.
  • Prep Time: 10 min
  • Cook Time: 4 hours


  • Calories: 77
  • Fat: .1g
  • Carbohydrates: 14g
  • Protein: 2.6g

If you make this slow cooker pasta sauce, we’d love to hear your thoughts. If you post it on social media, we’d love for you to tag @thesupermomlife! Don’t forget to check out all of our family-friendly recipes.


This slow cooker pasta sauce is not only easy to make, but it's only 77 calories per serving.
Looking for a healthier option to jar pasta sauce?  This slow cooker pasta sauce is easy to make, packed with veggies and so delicious!

















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Hello There!

I'm so honored that you've found us! I'm Heather, a Mom of 3 who blogs about parenting, food, occasional travel and how I overcame my daily struggle with anxiety. I miss sleeping and rely on coffee and laughter to get me through the day. I hope you enjoy and visit often!

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  • I’ve never made one in a slow cooker, only on stove top. But I’ll save this yummy recipe.

  • Thank you so much for sharing this one! I tried to make spaghetti sauce in a pot so many times, and I always burn. I can’t imagine I would have that problem with this crockpot recipe. Boom!

    • I am glad that more and more people are getting mindful of what they eat and start making food at home. This pasta sauce looks delicious. I have to try it.

  • I love pasta sauce so much and love trying different versions of it. Thanks for sharing your recipe and I must try it soon.

  • We also eat a lot of pasta and always from the jar sauce. Your hearty sauce may make us change our tune because it really makes a difference.

  • What a great time saver! And love that it won’t splatter tomato juice/sauce/parts all over my stovetop!