keto marinara sauce feature
Dressings & Sauces, Low Carb

Keto Marinara Sauce

Make your own incredibly delicious Keto Marinara Sauce in just 10 minutes for a fraction of the cost of store bought sugar free pasta sauce!

Skillet with keto marinara sauce, garnished with chopped basil.

Are you as fed up as I am with the price of Keto pasta sauce? It’s insane! Where I live in Canada, a typical jar costs over 10$! For one jar! What’s up with that, hey? Other pasta sauces can be as little at .99 cents for the same quantity. It’s crazy!

With this Keto Marinara Sauce, you won’t need to spend an arm and a leg every time you want to make zucchini noodles or cabbage lasagna!


All ingredients used in this Keto Marinara.

Organic Diced Tomatoes – I always buy organic, non GMO diced tomatoes, and read the labels to find the tomatoes with the least amount of ingredients. My favourite brand has only organic tomatoes and organic tomato juice.

Monk Fruit / Erythritol Sweetener – We use sweetener to cut down on the acidity caused by the tomatoes in this sugar free pasta sauce. If you don’t want to use it, that’s fine, but I highly recommend it! I like the brands SoNourished or Lakanto.

How to make Keto Marinara Sauce

It’s so easy!! Grab a medium saucepan and heat it on medium heat with the avocado (or olive) oil. Mince the garlic and, once the oil is hot, add the garlic and fry until fragrant, about 1 minute.

Saucepan with diced tomatoes and spices, ready to be mixed and brought to a simmer.

Stir in the diced tomatoes, water, red wine vinegar, sweetener and remaining spices (red pepper flakes, onion flakes, basil, oregano, parsley, salt and pepper). Bring the Keto pasta sauce to a boil, reduce to a simmer and cook for 5 minutes.

Use an immersion blender to puree the sauce into a dreamy, creamy, smooth Keto Marinara Sauce, or leave chunky if you prefer, though I highly recommend it nice and smooth!

Keto Marinara Sauce loaded into a large mason jar.

Frequently Asked Questions

What marinara sauce is Keto friendly?

There are a few store bought sauces that are keto friendly, but they usually cost quite a bit. Here in Canada, Rao’s pasta sauces are over $10 for a single jar!

That is why I initially started to make my own Keto pasta sauce. And now that I’ve started, it’s no longer the cost that stops me from buying it. It’s that this Keto Spaghetti Sauce is just SO delicious and easy to make, I find the thought of buying it totally crazy!

What sauces are Keto friendly?

I love sauce! That’s why I created a whole bunch of different sauces that are Keto friendly. Besides this Keto Spaghetti Sauce, you’ve gotta try this 3 ingredient Honey Mustard, the best BBQ Sauce, this Sweet & Sour (perfect for skipping the takeout), Peanut Sauce, Hollandaise Sauce for Sunday morning, Cheese Sauce, Mushroom Sauce, super creamy Alfredo or this 5 minute Pizza Sauce!

Different ways to use Keto Marinara Sauce

Now that you’ve got this super easy Keto Pasta Sauce, here are some of my favourite Keto friendly ways to enjoy it!

Of course there is Spaghetti & Meatballs, perfectly served with Zucchini Noodles. Chicken Parmesan is another great dish, or have you tried Cabbage Lasagna? It’s unbelievable! This Keto Marinara can also be used as a dip for Mozzarella Sticks.

baking dish with cabbage lasagna, one slice removed.

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keto marinara sauce feature

Keto Marinara Sauce

This Keto Marinara Sauce is super fast to make, flavourful, absolutely delicious and very cost effective compared to store bought sugar free pasta sauce!
5 from 11 votes
Prep Time 2 minutes
Cook Time 8 minutes
Total Time 10 minutes
Course Main Course, sauce
Cuisine Canadian, Italian
Servings 3 cups
Calories 61 kcal


  • 2 tbsp avocado or olive oil
  • 4 cloves garlic
  • 28 oz organic diced tomatoes
  • ½ cup water
  • 2 tsp monk fruit / erythritol sweetener
  • 1 tbsp red wine vinegar
  • ¼ tsp dehydrated red pepper flakes
  • 1 tsp dehydrated onion flakes
  • 1 tsp dried basil
  • ½ tsp dried oregano
  • ½ tsp dried parsley
  • 1 tsp sea salt
  • ½ tsp ground black pepper


Equipment Needed


  • Heat a saucepan on medium heat with the avocado (or olive oil). Mince the garlic and, once the oil is hot, add the garlic and fry until fragrant, about 1 minute.
  • Stir in the diced tomatoes, water, red wine vinegar, sweetener, red pepper flakes, onion flakes, basil, oregano, parsley, salt and pepper. Bring the sugar free pasta sauce to a boil, reduce to a simmer and cook for 5 minutes to thicken the sauce.
  • Use an immersion blender to puree the sauce into a dreamy, creamy, smooth Keto Marinara Sauce.


Expert Tips

  1. Use a garlic press to easily and efficiently press the garlic into smithereens.
  2. Leave your sugar free pasta sauce chunky if you prefer, though I highly recommend it nice and smooth!
  3. Don’t have an immersion blender but want a smooth sauce? Cool it to room temperature and then blend in either a food processor or blender. After it is processed smooth, it can be returned to the saucepan to be reheated.
  4. Use this Keto Marinara Sauce immediately or cool to room temperature, pour into an air tight container or jar and store in the refrigerator for up to 5 days, or freeze and it will last 3-4 months!
Nutrition Facts
Nutrition facts are an estimate only! The ingredients you choose could have different nutritional values than the ingredients I have used.  
 * Net carb count excludes both fibre and sugar alcohols, because these do not affect blood sugar in most people.
Deduct the fibre ( 1.1g ) and sugar alcohols ( 1g ) from the total carbs to get 4.1 g net carbs per 1/2 cup sauce.


Serving: 0.5cupCalories: 61kcalCarbohydrates: 6.3gProtein: 0.8gFat: 4gSodium: 520mgFiber: 1.1g
Keyword keto marinara sauce
Tried this recipe?Let us know how it was!

17 thoughts on “Keto Marinara Sauce

  1. Chef Dennis says:

    Yum! This Keto Marinara Sauce looks really tasty! This will be perfect for my pasta. I am planning to have pasta for dinner. Good thing I bumped into this recipe.

  2. 5 stars
    I love saving money and making my own pasta sauce makes me so happy. I love this sugar free option while still having all the flavor.

  3. 5 stars
    Wonderful. I’m all for from-scratch cooking because I always want to know what is in my food. This sauce is so easy to make and I bet it tastes so much better than store bought.

  4. 5 stars
    I completely agree about being tired of some commercial products. I love that you posted such a delicious sauce! It will make all the difference in my house. Homemade is always better. Thanks for sharing!

  5. Neli Howard says:

    5 stars
    This marinara sauce looks so delicious!! Making your own pasta sauce is always better – healthier and so easy to make. I am wondering if I can make a big batch and freeze it for later.

    1. Aleta says:

      Hey Neli! You absolutely can freeze this sauce, I recommend cooling it down first and then packaging into single sized freezable containers.

  6. Leslie says:

    I so agree with you! The cost of sugar free pasta sauce is insane! And I’ll never forget my surprise when I found out that most pasta sauces had sugar! Your recipe looks so so amazing!

  7. 5 stars
    I am making a big batch of this sauce to freeze since I am now in a low sugar diet. Thanks for sharing a great recipe!

    1. Aleta says:

      I hope you love it Analida!

  8. Amanda says:

    5 stars
    Love making my own pasta sauce and I really like that monk fruit sweetener is used here!

  9. 5 stars
    Definitely a new recipe to my pasta dish. One of my family favorite Dinner option any day. Love your flavorful and amazing combination to making this awesome sauce.

  10. Leslie Kiszka says:

    5 stars
    I’m always looking at the jars of marinara sauce in the stores groaning because of the sugar content. So much better to make it at home – going to try this next time we want to do spaghetti for dinner!

    1. Aleta says:

      Right?! It’s crazy! I hope you love it Leslie 🙂

  11. Aline says:

    5 stars
    I love making my own sauce and I love that this one is sugar free! I have to try this recipe!! Thanks!

  12. Stacey says:

    5 stars
    Soooo good!

    1. Aleta says:

      Glad you enjoyed it Stacey 😀

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