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Slow Cooker Easy Roasted Garlic Marinara

Slow Cooker Roasted Garlic Marinara on wooden spoon and slow cookerLovers, eaters and cookers of real authentic Italian food please look away now! Okay, I’ve warned you! This is not the way your grandma would have taught you to make a traditional marinara sauce. BUT, this is the way we are going to make a marinara sauce today because we are busy people, but us busy people want delicious homemade sauce too! We just don’t have time to make it! Except now we do because we can just use our slow cooker and a few sneaky little shortcuts and with only about 5 minutes of actual work we have a fabulous dinner hours later!

Slow Cooker Roasted Garlic Marinara on wooden spoon and slow cookerOkay, so this makes about a ton of sauce. And that’s okay! Cause after dinner you can bottle this up in some mason jars and have homemade sauce for your manicotti or lasagna or your meatball subs. Mmmmmm, mmmmmmm, I’m dreaming of the possibilities.Slow Cooker Roasted Garlic Marinara on wooden spoon and slow cooker The best thing about this recipe besides the results? The fact that all you do is open and pour and measure a couple of things and that’s it! Nothing to saute, nothing to chop. It so easy!! Did I say that already?! Really, really, easy.

Slow Cooker Roasted Garlic Marinara on wooden spoon and slow cookerI served ours over some gluten-free spaghetti along with some prepared meatballs that I just heated in the oven. Can I just say how much better this was without a jar of prepared sauce?! Just a bit more effort yields much greater results!

Slow Cooker Roasted Garlic Marinara on wooden spoon and slow cooker

Slow Cooker Roasted Garlic Marinara

Slow Cooker Easy Roasted Garlic Marinara

Jennifer Draper
With only 10 minutes of prep time, this Slow Cooker Easy Roasted Garlic Marinara will be your new go-to sauce for dinner tonight or meal prep for later!
4.58 from 7 votes
Prep Time 10 minutes
Cook Time 5 hours
Total Time 5 hours 10 minutes
Servings 8
Calories 135 kcal


  • 56 ounces canned crushed tomatoes
  • 16 ounces canned roasted garlic tomato sauce
  • 6 ounces canned tomato paste
  • 2 tablespoons olive oil
  • 2 teaspoons jarred minced garlic
  • 2 teaspoons honey
  • 2 teaspoons sea salt
  • 2 teaspoons roasted garlic powder (or regular if you can't find roasted)
  • 2 teaspoons freeze dried basil (like Litehouse)
  • 1/2 teaspoon Italian seasoning
  • 1/8 teaspoon pepper
  • pinch red pepper flakes


  • Add all ingredients to slow cooker
  • Stir to combine
  • Cover and cook on high for 4-5 hours or low for 8-9 hours
  • Serve with your favorite pasta or as desired


I made this in my 4.5 quart round slow cooker on high for 5 hours, then kept in on warm for another 2 hours


Calories: 135kcalCarbohydrates: 24gProtein: 5gFat: 4gSaturated Fat: 1gSodium: 1309mgPotassium: 994mgFiber: 6gSugar: 15gVitamin A: 996IUVitamin C: 27mgCalcium: 86mgIron: 4mg
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Important nutritional disclaimer

Slow Cooker Roasted Garlic Marinara

Great to use in these recipes:

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Slow Cooker Spaghetti and Meatball Soup in yellow bowl with spoon

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  1. Hi I live in Greece and it’s not possible to get roasted garlic tomato sauce here. What could I replace it with? Maybe passata with some grated garlic?

    1. Hi Lesley! You could make your own roasted garlic to add to plain sauce or use roasted garlic powder to add to the sauce, which you can generally order on Amazon.

  2. 5 stars
    I made 1/2 a recipe and put it in the fridge for a few days until needed. I did a taste test with some jar sauce. Of course this tasted so much better! I am not sure I will buy sauce in a jar again! I was unable to find roasted garlic tomato sauce at my store but I just added a little more minced garlic. I love this recipe.

    1. It makes around 10 cups of sauce. You can store in airtight container in fridge for up to 3 days or it would freeze well in a plastic freezer bag with air removed for up to 6 months.

      1. 5 stars
        My mouth started to water, reading all the ingredient. Will cook it this weekend. I slow cook just about my meals or use my Bar b Que grill. I don’t cook with any oils. There are except, when you need add some, to the slow cooker.

        Finally I can slow cook this sauce and freeze the remainder in separate plastic jars.

        Thanks a lot,
        Vic Levi

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