Last Updated on November 18, 2022 by Toya
Learn how to make this keto marinara sauce with just a handful of ingredients and 4.7g net carbs per 1/2 cup! This low carb marinara sauce tastes so good and can be used for so many keto friendly recipes!
Keto marinara sauce
Many people think that you can’t eat tomatoes on keto, but, as long as you count your macros, you surely can.
This marinara sauce recipe is great for any recipe that calls for jarred marinara sauce such as cheesy cauliflower breadsticks, keto chili, and chicken parmesan with marinara sauce. This sauce is also great as a dipping sauce for mozzarella sticks or cheesy breadsticks.
If you’re looking for a super easy marinara sauce recipe, this one is your best bet. Made in under 15 minutes, this low carb marinara sauce only has 4.7 grams of net carbs per serving!
Recipes like this prove that you can eat a wide variety of foods and truly enjoy the foods you eat on keto!
Tips for the best sugar free marinara sauce
- I only used grated garlic for this recipe, however, if you desire, you can use 1/2 cup of finely chopped onions for this sauce instead.
- You can also use a combination of 1/2 cup finely chopped onions, 2 tbsp grated garlic, and chopped fresh parsley for this recipe for a fresh sauce.
- For this recipe, a can of 28 oz of crushed tomatoes with no salt added was used, however, you can also use fresh tomatoes that you pureed or chopped yourself, whole canned tomatoes, or canned pureed tomatoes. Anything you can find at your supermarket that is low in carbs and has no added sugars or no added seasonings and salt will do just fine. This is important as the added seasonings will affect the ultimate taste of the sauce.
Keto marinara sauce FAQs
Can you eat tomato sauce on keto?
Yes, you can eat tomato sauce on keto. Of course, these have to be eaten in moderation, but as long as you use no sugar-added options and you count your macros, you should be fine.
Is marinara sauce okay on keto?
Yes! Marinara sauce is fine on keto. Pay attention to the labels and make sure that the store-bought marinara sauce you’re using is keto friendly. Or, make your own with keto friendly ingredients.
How many net carbs are in keto friendly marinara sauce?
There are 6.6 grams of carbs and 1.9 grams of fiber in every 1/2 cup serving of our homemade marinara sauce. Therefore, there are 4.7 grams of net carbs per serving.
Ingredients to make marinara sauce
- 28 oz tomato puree (no sugar added)
- ¼ cup olive oil
- 2 tbsp grated garlic
- 1 tsp oregano
- 1 tsp thyme
- 1 tsp black pepper
- 1 tbsp parsley
- 1/2 tsp salt
- 1/2 tsp erythritol (or another keto sweetener)
How to make keto marinara sauce
To start, measure out and gather all of your ingredients in one place.
Then heat up the olive oil in a saucepan. Once the oil is heated, add in the grated garlic and cook, stirring, frequently so it doesn’t burn until fragrant or about 30 seconds.
Next, add in the tomato puree and erythritol over medium heat and bring this to a simmer for 5 minutes. The sweetener is used mainly to cut the acidity of the tomatoes.
Then add in the dried parsley, oregano, some ground black pepper, and thyme and cook for another two minutes while stirring constantly.
Lastly, add in the red wine vinegar, stir, then lower the heat and simmer for 5 minutes. At this stage, add the salt to taste.
Sprinkle with some fresh chopped parsley and serve.
How to use marinara sauce on keto
You can use this low carb marinara sauce in many ways. Here are some ideas:
- On all sorts of keto pizzas
- Over keto spaghetti
- In lasagna recipes
- As a dipping sauce for cheesy breadsticks, keto fried zucchini, and more
How to store keto friendly marinara sauce
To store this keto sauce, let cool, then pour it into an air-tight jar or container and place it in the fridge for up to a week. Bring out when you’re ready to serve.
More keto sauce recipes
Tools to make keto friendly marinara sauce
- Saucepan
- Wooden spoon
- Mason jar

Keto Marinara Sauce
This easy keto marinara sauce recipe opens the door to so many other delicious keto recipes. Made in less then 20 minutes and with only 4.7g net carbs per serving, this marinara sauce is a must try!
Ingredients
- 28 oz tomato puree (no sugar added)
- ¼ cup olive oil
- 2 tbsp grated garlic
- 1 tsp oregano
- 1 tsp thyme
- 1 tsp black pepper
- 1 tbsp parsley
- 1/2 tsp salt
- 1/2 tsp erythritol (or other keto sweetener)
Instructions
- To start, measure out and gather all of your ingredients in one place.
- Then heat up the olive oil in a pot. Once the oil is heated, add in the grated garlic and cook, stirring, frequently so it doesn’t burn until fragrant or about 30 seconds.
- Next, add in the tomato puree and erythritol over medium heat and bring this to a simmer for 5 minutes. The sweetener is used mainly to cut the acidity of the tomatoes.
- Then add in the dried parsley, oregano, black pepper and thyme and cook for another two minutes while stirring constantly.
- Lastly add in the red wine vinegar, stir, then lower the heat and simmer for 5 minutes. At this stage, add in the salt to taste.
- Sprinkle with some fresh chopped parsley and serve.
Nutrition Information:
Yield: 6 Serving Size: 1/2 cupAmount Per Serving: Calories: 110Total Fat: 9.3gSaturated Fat: 1.3gCholesterol: 0mgSodium: 202mgCarbohydrates: 6.6gNet Carbohydrates: 4.7gFiber: 1.9gSugar: 3.5gProtein: 1.4g