Easy 20-minute keto tomato sauce is rich, vibrant, and completely sugar-free. Fresh tomatoes, onions, and garlic simmer with tomato paste, thyme, and a little stevia into a versatile low-carb base. Use it on zoodles, keto pizza, or anywhere you'd reach for a jar of marinara.
Craving a rich, vibrant tomato sauce without the hidden sugars and carbs? Look no further! This incredibly easy, 20-minute Keto Tomato Sauce is a game-changer for your low-carb lifestyle. Made with fresh ingredients and a hint of sweetness from stevia, it’s the perfect healthy base for everything from zoodles to keto pizza. Say goodbye to bland, store-bought sauces and hello to homemade deliciousness!
Ingredients
• 2 large tomatoes, roughly chopped (about 450g / 15.9 oz)
• 1 cup / 240ml tomato sauce, sugar-free
• 2 onions, chopped
• 2 garlic cloves, crushed
• 2 tbsp / 30ml tomato paste
• 3 tbsp / 45ml olive oil
• Spices
• 2 tsp stevia powder
• ½ tsp dried thyme
• 1 tsp (5 ml) salt
Instructions
1. Directions
2. Heat the olive oil in a large pot or multi-cooker on the ‘Sauté’ setting over medium heat. Add the chopped onions and crushed garlic, and cook for 3-4 minutes until softened and fragrant.
3. Add the chopped tomatoes, stevia, salt, and dried thyme. Pour in ¼ cup of water and simmer, stirring occasionally, until the tomatoes have softened and most of the liquid has evaporated.
4. Stir in the tomato paste until it is fully incorporated. Pour in the sugar-free tomato sauce and mix everything together well.
5. Continue to cook for another 2-3 minutes to allow the flavors to meld. Taste and adjust seasoning if desired before serving.
Nutritional Information
• Per Serving (Serves 8)
• Calories: 76
• Total Fat: 5.5g
• Net Carbs: 5.2g (0.18 oz)
• Protein: 1.3g
• Fiber: 1.8g
Pro Tips
• For a smoother, restaurant-style sauce, use an immersion blender to blend the sauce directly in the pot after cooking.
• Add a handful of fresh basil leaves at the very end of cooking for a burst of fresh, aromatic flavor.
• To develop a deeper, richer taste, roast the tomatoes and garlic in the oven before adding them to the pot.
• Make a double batch and freeze it in individual portions for quick and easy low-carb meals later on.
FAQ
Q: How many net carbs are in this tomato sauce
A: This keto tomato sauce is very low in carbohydrates, containing just 5.2g (0.18 oz) of net carbs per serving, making it perfect for a low-carb lifestyle.
Q: Can I make this sauce smooth instead of chunky
A: Yes, for a smoother, restaurant-style sauce, you can use an immersion blender to blend it directly in the pot after it has finished cooking.
Q: Is this keto tomato sauce suitable for freezing
A: Absolutely! This sauce freezes very well. We recommend making a double batch and freezing it in individual portions for quick and easy low-carb meals.
Q: How can I get a richer tomato flavor
A: To develop a deeper, richer taste, try roasting the fresh tomatoes and garlic in the oven before adding them to the pot. You can also add a handful of fresh basil at the end of cooking for more flavor.
Pro Tips
- For a smoother, restaurant-style sauce, use an immersion blender to blend the sauce directly in the pot after cooking.
- To develop a deeper, richer taste, roast the tomatoes and garlic in the oven before adding them to the pot.
- Make a double batch and freeze it in individual portions for quick and easy low-carb meals later on.
- Add a handful of fresh basil leaves at the very end of cooking for a burst of fresh, aromatic flavor.
Frequently Asked Questions
Is this tomato sauce keto-friendly?
Each serving has 5.2g net carbs and 76 calories, and the stevia keeps it sugar-free — a solid base for keto meals.
Can I freeze this tomato sauce?
Yes — make a double batch and freeze it in individual portions so quick low-carb meals are always within reach.
What can I use this sauce for?
It's a perfect low-carb, sugar-free base for everything from zoodles to keto pizza, and it works anywhere a jarred marinara would.
How do I make the flavor deeper?
Roast the tomatoes and garlic in the oven before adding them to the pot — it gives the sauce a noticeably richer taste.
Recipe card below.
More Recipes You’ll Love
- Lightning-Fast Keto Instant Pot Teriyaki Sauce
- Onion and Cauliflower Dip: Creamy, Tangy Perfection
- Slow Cooker Sugar-Free Barbecue Sauce
Easy 20-Minute Keto Tomato Sauce
Ingredients
Method
- Directions
- Heat the olive oil in a large pot or multi-cooker on the 'Sauté' setting over medium heat.
- Add the chopped onions and crushed garlic, and cook for 3-4 minutes until softened and fragrant.
- Add the chopped tomatoes, stevia, salt, and dried thyme.
- Pour in ¼ cup of water and simmer, stirring occasionally, until the tomatoes have softened and most of the liquid has evaporated.
- Stir in the tomato paste until it is fully incorporated.
- Pour in the sugar-free tomato sauce and mix everything together well.
- Continue to cook for another 2-3 minutes to allow the flavors to meld.
- Taste and adjust seasoning if desired before serving.
- Add a handful of fresh basil leaves at the very end of cooking for a burst of fresh, aromatic flavor.
