Buying low-carb or keto tomato sauce from the store can be expensive. Making your own homemade low-carb tomato sauce is simple, economical, and quick. This keto tomato sauce recipe contains no added sugar, takes minutes to prepare, and can be customized to suit your flavor preferences.
Low Carb Tomato Sauce with No Added Sugar
If you follow a keto or low-carb lifestyle and prefer jarred sauces without added sugar, making your own marinara is a great solution. This recipe uses canned tomatoes without added sugar, combined with olive oil and dried seasonings, blended until smooth. Use it on zucchini noodles, for dipping, or any recipe that calls for a keto-friendly marinara.
Homemade Keto-Friendly Marinara Sauce in 5 Minutes
- This recipe uses a 28 oz can of crushed, pureed, or whole peeled plum tomatoes—choose a brand with no added sugar. Check the ingredient label when buying.
- Combine all ingredients in a blender with a little olive oil and your preferred spices. Common choices are garlic powder, onion powder, and a mix of dried Italian herbs.
- The result is flavorful, far cheaper than many jarred low-carb sauces, and completely free of added sugar. It’s a versatile keto tomato sauce you can adjust to taste.
- If you prefer a thicker, more concentrated flavor, simmer the sauce on low heat for 10–15 minutes to cook it down before serving, especially useful for dipping.
- All recipe details are provided in the recipe section below.
Tips: How To Make Easy Keto Tomato Sauce
- Use high-quality canned tomatoes. Pureed, crushed, or whole tomatoes work—just ensure no added sugar and low natural sugar content.
- Seasonings provide most of the flavor. Try garlic powder, onion powder, dried oregano, basil, thyme, and a pinch of red chili flakes for heat. Omit the chili flakes if you prefer no spice.
- Blend the tomatoes, olive oil, and seasonings until smooth. Adjust seasoning to taste after blending.
- Freeze leftovers in airtight jars or containers. Make a double batch to keep a healthy homemade sauce on hand.
- Recipe details and nutrition facts are below for convenience.
Low Carb Tomato Sauce
Yield:
8 servings
8 servings
Prep Time: 5 mins
Total Time: 5 mins
This recipe is based on canned tomatoes with no added sugar. If you prefer a sweeter sauce, add 1 teaspoon of a carb-free sweetener such as monk fruit or stevia.
Makes about 4 cups.
Rating: 4.8 from 5 votes
Ingredients
- 28 oz. (794 g) canned tomatoes (crushed, chopped, or whole peeled plum; no added sugar)
- 1/4 cup (60 ml) olive oil (or 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)
Equipment
-
Blender
Instructions
-
Add all ingredients to a blender: canned tomatoes, olive oil, salt, pepper, garlic powder, onion powder, dried herbs, and optional red pepper flakes. Pulse until smooth.
-
Taste and adjust seasoning to your preference. If you like a sweeter sauce, add a small amount of carb-free sweetener.
-
Store in a sealed container in the refrigerator for up to two weeks, or freeze for longer storage.
Nutrition Information per Serving
Calories: 81 kcal,
Carbohydrates: 5 g,
Protein: 1 g,
Fat: 7 g,
Sugar: 3 g.
Carbohydrates: 5 g,
Protein: 1 g,
Fat: 7 g,
Sugar: 3 g.
Course: Sauces
Cuisine: American, Italian, Keto, Low Carb, Mediterranean
Calories: 81
More Easy Recipes
- Check out our keto pizza recipes collection for low-carb pizza ideas and sauces.
- Shredded chicken pizza crust (low-carb)
- Cauliflower crust pizza — plant-based option
- Keto breaded broccoli bites (air fryer)
- Fig season recipes and seasonal ideas
