Buying low carb or keto tomato sauce is expensive. Homemade low carb tomato sauce is so easy and way more budget friendly. Best of all, this keto tomato sauce recipe is so quick to make and you can customize the spices to your liking!

Low Carb Keto Tomato Sauce in a bowl with a spoon

Low Carb Tomato Sauce with No Added Sugar

Everyone is always complaining about how expensive different brands of low carb tomato sauces are. We’re say to make your own with our recipe that’s keto friendly and no added sugar. Yup, it’s definitely finished in 5 minutes in the blender and instantly you have a low carb marinara sauce. You an use it for zucchini noodles, dipping or when ever your recipe calls for keto friendly low carb marinara sauce.

Video: Recipe for Low Carb Tomato Sauce

Low Carb Keto Tomato Sauce in a spoon

Homemade Keto Friendly Marinara Sauce in 5 minutes

  • Our recipe uses a can of crushed, pureed or plum tomatoes but choose the one with no added sugar (check the ingredient label when buying).
  • All ingredients go into a blender with a little olive oil and your favorite spices. We love garlic powder, onion powder and some dried herbs.
  • The flavors are fantastic, it’s way cheaper than buying pre-made jarred sauces, and it doesn’t have any added sugar so you can have a great low carb tomato sauce the way you like it.
  • You can also cook the sauce on low simmer for for about 10-15 minutes if you want. This concentrates the flavors a little more and cooks the tomato sauce, especially when you’re using it straight for dipping.
  • All keto tomato sauce recipe details are in the recipe box below.
Low Carb Keto Tomato Sauce step by step photos

{Tips} How To Make Easy Keto Tomato Sauce

  1. Use quality canned tomatoes. You can use pureed, chopped or whole tomatoes. Just make sure it has no added sugar and very little natural sugar.
  2. The spices is what gives the tomato sauce so much flavor. We love using garlic powder, onion powder, dried herbs and a touch of red chili flakes. If you don’t like spicy heat, it’s optional.
  3. Add the tomatoes, olive oil and spices to a blender. Pulse for a few minutes and done!
  4. Freeze the tomato sauce in air tight jars or containers. Make a big batch and have delicious homemade healthy sauce at your disposal.
  5. All recipe details are in the recipe box below.
Low Carb Keto Tomato Sauce Recipe that's Homemade |

Low Carb Tomato Sauce

This recipe is based on canned tomatoes with no added sugars. If you want your sauce sweeter, you can use 1 teaspoon of carb free sweetener like monk fruit, stevia, etc.
Makes 4 cups.
5 from 4 votes

(click on stars to rate)


  • 28 oz. (794 g) canned tomatoes (crushed, chopped or whole plum peeled)
  • 1/4 cup (60 ml) olive oil (avocado or grape seed oil)
  • 1 teaspoon (5 ml) kosher salt , or to taste
  • 1/2 teaspoon (2.5 ml) fresh cracked black pepper , or to taste
  • 1 teaspoon (5 ml) garlic powder
  • 1/2 teaspoon (2.5 ml) onion powder
  • 2 teaspoons (10 ml) dried herbs (oregano, basil, thyme, parsley)
  • 1/2 teaspoon (2.5 ml) red pepper flakes (optional)


  • Blender


  • Add all ingredients to blender (canned tomatoes, olive oil, salt, pepper, garlic powder, onion powder, herbs, and optional red pepper flakes). Pulse until smooth.
  • Taste for seasonings and adjust to personal preference if you like.
  • Store in sealed container in the fridge for up to 2 weeks.


Nutrition Information per Serving

Calories: 81kcal, Carbohydrates: 5g, Protein: 1g, Fat: 7g, Saturated Fat: 1g, Sodium: 298mg, Potassium: 240mg, Fiber: 1g, Sugar: 3g, Vitamin A: 873IU, Vitamin C: 14mg, Calcium: 15mg, Iron: 1mg

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