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This recipe for sugar-free keto tomato sauce is full of flavor and can be used in so many recipes. All while only using 5 ingredients!
While tomatoes are keto-friendly, store-bought versions of tomato sauce can be full of hidden sugars, carbs and who knows what else that isn’t good for you.
This is a simple keto tomato sauce recipe that you can use in any way you like. Use this sauce on a cauliflower pizza crust, low-carb eggplant parmesan, or a keto pizza casserole.
The sauce can easily be prepared ahead, saving you time in the kitchen.
How to make keto tomato sauce
Step 1: In a small saucepan over medium-high heat, saute the garlic in the olive oil. Saute for a minute until the garlic is fragrant. Make sure the garlic doesn’t brown and become burnt.
Step 2: Turn the heat down and add the tomatoes, oregano, vinegar, and salt to the saucepan. Bring to a simmer and allow to cook for 30 – 40 minutes, allowing the sauce to reduce and thicken.
Step 3: Use the sauce immediately if desired or store for later use.
Make a batch and store it!
You can use this sugar-free tomato sauce immediately if desired or it can be stored for later use. To store the sauce, allow it to cool to room temperature first. Once cooled, transfer to an airtight container and refrigerate for up to 5 days.
You can also freeze the sauce after it has cooled to room temperature. Freeze in bags or a container for up to 6 weeks. Defrost before use.
Spicing it up!
Because this keto marinara sauce only uses 5 simple ingredients, it’s a great base that you can add other flavors to.
It tastes fantastic as it is, of course, but you can change the flavor profile by adding additional spices such as basil or parsley. You can also adjust the heat by adding red pepper flakes or even chopped chili peppers.
A sweet sugar-free tomato sauce?
The fact that this sauce is sugar-free doesn’t mean that it can’t be a little sweet! There are many no-carb sweeteners that you can eat on a keto diet.
I have made this sauce with a little bit of Stevia sweetener and it turned out great. Monkfruit sweetener is also a great option. Just be careful and add a little at a time as both sweeteners are quite strong.
Other healthy low-carb recipes to try
If you liked this recipe, here are some other low-carb recipes you might enjoy:
You can also check out the roundup I created of Healthy Dinner Recipes for Diabetics for even more great recipe ideas.
When you’ve tried this keto tomato sauce recipe, please don’t forget to let me know how you liked it and rate the recipe in the comments below!
Keto Tomato Sauce
Ingredients
- ¼ cup extra virgin olive oil
- 3 cloves garlic, finely diced
- 1 28 ounce can diced tomatoes
- ½ teaspoon dried oregano
- 1 teaspoon white vinegar
- ½ teaspoon salt
Instructions
- In a small saucepan over medium-high heat, saute the garlic in the olive oil. Saute for a minute until the garlic is fragrant. Make sure the garlic doesn’t brown and become burnt.
- Turn the heat down and add the tomatoes, oregano, vinegar, and salt to the saucepan. Bring to a simmer and allow to cook for 30 – 40 minutes, allowing the sauce to reduce and thicken.
Desi
Are you able to Water Bath Can this recipe?
Christel Oerum
That’s not something I have experience with so I’m not sure
Becky
Mine isn’t reducing. Was I supposed to drain the tomatoes? Thanks
Tobias Oerum
No, draining the tomatoes shouldn’t be necessary. The sauce is supposed to have a liquid consistency (it’s not ketchup) but of course it shouldn’t be completely runny. If you don’t think it has reduced enough, you can cook it for longer. The flavor just gets more concentrated the longer you cook the sauce.
Becky
Thanks!
Linsey
What is a serving?
Christel Oerum
The serving size for all of our recipes is listed on the recipe card. This recipe yields 10 servings and depending on how long you cook the sauce for that would be about 2-3 oz. per serving
fae
hi, can I can this sauce?
Providence
Can l add a sweetener like stevia
Christel Oerum
Yes, that won’t change the carb count and just add a little more sweetness
Jim
The diced tomato can has sugar in it. What type with no sugar do you use?
Christel Oerum
I don’t I’ve seen canned tomatoes with added sugar, however, they will have a limited amount of naturally occurring sugars. Generally, a can of tomatoes shouldn’t have more than 20 grams of carbs total
Carter Jokiel
How many grams is a serving?
Christel Oerum
It will depend on how long you cook it but should be around 85 grams per serving
Denise
Why does it have vinegar? It seems it would be too acidic with the acid in tomatoes.
Christel Oerum
That’s how we like it but you can experiment with omitting it
Bishaka Debbarma
I never like it when my ketchup is too sweet, so this is actually what I needed. Thanks!!!
Gourav Debbarma
woah! nice recipe…
This keto tomato sauce will be perfect for keto diet as one can relax and consume without worrying about sugar.