First Time Visiting? Start Here!

Garden Fresh Crockpot Spaghetti Sauce (Whole30)

This fresh, homemade Garden Fresh Crockpot Spaghetti Sauce is a delicious meatless sauce made from scratch. This Whole30/Paleo recipe creates magic from fresh tomatoes and herbs.

a bowl of crockpot spaghetti sauce with tomatoes and herbs

Have you ever thought “can I make spaghetti sauce in a crockpot” to yourself?

Heeeeeeck yes you can! And you should because then you don’t have a to stir a pot all day long for hours and hours. Snoooooore.

The slow cooker heats evenly and gently and does its thing without burning the sauce. Pure magic my friends. Pure magic.

What Kind of Tomatoes Work Best in Crockpot Spaghetti Sauce?

Heartier paste style tomatoes are the easiest to work with for homemade sauce. They are easy to peel and have fewer seeds. They also have a lower moisture content which means they take less time to cook down.

But sometimes you have 18 different tomato plants that are all ripening at the same time and you need to do something with them. This crockpot spaghetti sauce is the perfect home for those rando tomatoes.

tomatoes, garlic, and herbs on a wooden board

Urrr, This Seems Like It Has A Lot of Steps

Yeah, it looks pretty time intensive but it is all related to removing the skins and seeds from your fresh garden tomatoes. Removing the tomato skin and seeds keeps the sauce from becoming bitter which means you don’t need to add sugar to your sauce to balance it all out.

Don’t want to take that extra step? I got you covered. Cut the tomatoes in half, push the seeds out with your thumb and then grate the tomato using a box grater discarding the skins. It’s not foolproof as some skin will still get mixed in, but that’s ok.

“Life’s short – eat some skin. And put the lotion in the basket” – Buffalo Bill

Here’s How to Make It

Rinse your tomatoes and drop them in a pot of boiling water for one minute.

Scoop them out with a slotted spoon and put them in a bowl of ice water. Now the skins will slip off easily. Yay!

boiling and icing tomatoes from crockpot spaghetti sauce

Cut in half (quarters for larger tomatoes) and push out the seeds out with your thumb.

peeling and deseeding a tomato for crockpot spaghetti sauce

Add the tomatoes and all the ingredients (except baking soda) to your slow cooker. Cook on low for 10 hours or high for 7 hours.

crockpot spaghetti sauce in 3 steps

If you want a less chunky sauce, pulse it a few times with an immersion blender or mash it a bit with a potato masher or large spoon. Add the baking soda and salt and pepper to taste.

Pro Tips/Recipe Notes

  • What’s with the baking soda? Baking soda helps to neutralize the acidity of the tomatoes without adding sugar. I am kind of obsessed with the awesomeness of using baking soda as a kitchen hack. You’ll see it in play in my Homemade Pizza Sauce, Healthy Sweet Tea, Homemade Easy Tomato Soup, and Healthy Orange Chicken.
  • I used my Instant Pot on the slow cooker function with the slow cooker lid for this recipe.
  • Making this all day and then refrigerating it overnight gives it an extra kick of awesome in the flavor department. Kick in the flavor pants?
  • You can freeze this sauce in a wide mouth canning jar. Make sure to leave 1 inch of space between the top of the sauce and the top of the jar to allow for expansion during freezing.

a jar of crockpot spaghetti sauce with herbs and fresh tomatoes

Variations

  • Feel free to add meat if you’d like. Just make sure you cook it before incorporating it into the sauce.
  • If you hate yourself and love fungus, add some mushrooms. Barf.

More Recipes Like This

Making this recipe or others?

Post a photo on my Facebook page, share it on Instagram, or save it to Pinterest with the tag #sustainablecooks. I can't wait to see your take on it!

a bowl of crockpot spaghetti sauce with tomatoes and herbs
Print
5 from 2 votes
Garden Fresh Crockpot Spaghetti Sauce
Prep Time
35 mins
Cook Time
7 hrs
Total Time
7 hrs 35 mins
 

This fresh, homemade Garden Fresh Crockpot Spaghetti Sauce is a delicious meatless sauce from scratch. This Whole30 recipe creates magic from fresh tomatoes.

Course: Main Course
Cuisine: Italian
Keyword: crockpot spaghetti sauce, slow cooker spaghetti sauce, whole30 spaghetti sauce
Servings: 20
Calories: 25 kcal
Author: Sarah Cook - Sustainable Cooks
Ingredients
  • 10 cups tomatoes roughly chopped
  • 2 tbsp basil, fresh 2 tsp dried
  • 1 tbsp oregano, fresh 1 tsp dried
  • 1 tbsp parsley, fresh 1 tsp dried
  • 6 cloves garlic roughly chopped
  • 1 cup onion chopped
  • 6 oz canned tomato paste optional
  • 1/8 tsp baking soda
  • salt and pepper to taste
Instructions
  1. Rinse your tomatoes and drop them in a pot of boiling water for one minute.

  2. Scoop them out with a slotted spoon and put them in a bowl of ice water. Now the skins will slip off easily. 

  3. Cut in half (quarters for larger tomatoes) and push out the seeds out with your thumb.

  4. Add the tomatoes and all the ingredients (except baking soda) to your slow cooker. Cook on low for 10 hours or high for 7 hours. The sauce should be reduced by about half.

  5. If you want a less chunky sauce, pulse it a few times with an immersion blender or mash it a bit with a potato masher or large spoon. Add the canned tomato paste at this point if you'd like a thicker sauce.

  6. Add the baking soda (it will foam a bit) and salt and pepper to taste. 

Recipe Notes

Making this all day and then refrigerating it overnight gives it an extra kick of awesome in the flavor department.

 

You can freeze this sauce in a wide mouth canning jar. Make sure to leave 1 inch of space between the top of the sauce and the top of the jar to allow for expansion during freezing.

Nutrition Facts
Garden Fresh Crockpot Spaghetti Sauce
Amount Per Serving (0.25 cup)
Calories 25
% Daily Value*
Total Fat 0g 0%
Saturated Fat 0g 0%
Cholesterol 0mg 0%
Sodium 79mg 3%
Potassium 281mg 8%
Total Carbohydrates 5g 2%
Dietary Fiber 1g 4%
Sugars 3g
Protein 1g 2%
Vitamin A 15.7%
Vitamin C 16.1%
Calcium 1.8%
Iron 3.3%
* Percent Daily Values are based on a 2000 calorie diet.

This post contains affiliate links and we may earn a commission at no additional cost to you if you click through and make a purchase. This allows me to continue to provide free content, and I only share products that I use and love myself.

This fresh, homemade Garden Fresh Crockpot Spaghetti Sauce is a delicious meatless sauce from scratch. This Whole30/Paleo recipe creates magic from fresh tomatoes and herbs. #sustainablecooks #whole30 #crockpot #spaghettisauce #slowcooker

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

10 comments on “Garden Fresh Crockpot Spaghetti Sauce (Whole30)”

  1. Why baking soda?

    • Giiiiiirl, baking soda is my favorite kitchen hack!

      It neutralizes the acidity of the tomatoes without using sugar. I also use in it batches of iced tea, pizza sauce, and tomato soup for the same reason.

      • I keep a small container of baking soda in the car for bee and wasp stings and if I get an ice tea at the coffee shop it’s always to bitter.

      • We always used powdered meat tenderizer growing up for bee stings, but I suppose there is a lot of baking soda in there! How many times do you get stung that you have to carry around baking soda?

  2. Okay, 1) Buffalo Bill said that?, 2) I *personally* like mushrooms but alas my son’s on your side, and 3) I haven’t seen / heard the baking soda before — what’s up with that?

    • Buffalo Bill from Silence of the Lambs. Ha!!!

      Baking soda neutralizes the acidity of the tomatoes and allows you to enjoy a balanced product without sugar. I use it in pizza sauce, tomato soup, and iced tea. I’m Team Baking Soda all the way!

  3. Having a garden full of rando tomatoes might be my new top goal in life. This looks crazy good! 

  4. Love homemade tomato sauce!! This looks so good.