Sugar Free Marinara Sauce

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This simple, sugar-free marinara sauce is a beloved family recipe, packed with bold flavor and ready in under an hour thanks to a special technique from my Grandma. Perfect for pasta, pizza, or freezing for later!

A jar of red sauce with a spoon in it and a napkin next to it.

Why You’ll Love This Marinara Dipping Sauce

In my family, homemade marinara is the stuff of legends. Every aunt, cousin, and grandma has their own version, and honestly, they’re all pretty amazing. If you grew up in an Italian family, you know what I mean — pasta and “gravy” are basically a food group of their own. This version is my go-to because it’s super simple, skips the sugar, and still delivers tons of rich, savory flavor.

Whether you’re tossing pasta with marinara sauce or using it as a flavorful base for other recipes, this version brings that comforting homemade taste every time. I use a couple of small tricks (including a secret one passed down from my Grandma!) to cut the acidity and bring everything into balance. Once you taste it, I have a feeling the jarred stuff just won’t cut it anymore. Here's why this recipe is a keeper:

Freezes beautifully
No added sugar — just natural flavor
Uses pantry staples
Ready in under an hour

Ingredient Information And Substitutions

Tomato puree- Canned puree or fresh tomatoes are both great options. My go-to is 2 parts puree, 1 part sauce- all canned.
Water- Used to thin the sauce slightly. Adjust the amount based on your preferred consistency.
Olive oil- Extra virgin is preferred.
Garlic- Fresh cloves are best, though jarred minced garlic can work too.
Onion- Whole and peeled, just poked to release flavor. Yellow onion is ideal, but white or sweet onions are okay too.
Baking soda- Balances the acidity of the tomatoes. Use it sparingly!
Basil- Adds a nice herbal note. Fresh or dried works great.
Romano cheese- For topping- this adds savory depth. Parmesan can be used instead.

An overhead image of labeled recipe ingredients.

How To Make Sugar-Free Marinara Sauce

Step 1- Sauté the garlic.

Heat olive oil over medium heat. Add half of the garlic and cook until golden brown on all sides. Be careful not to let it burn.

Garlic sautéing in olive oil in a large pot and then a wooden spoon removing it once the garlic is golden.

Step 2- Add tomato and water.

Remove the garlic and stir in the tomato puree and sauce. Fill one can halfway with water, then divide that between all the cans. Swish it around to get all the tomato goodness, then pour it into the sauce to thin it a bit.

Step 3- Reduce the acidity.

Bring the sauce to a boil. Add ¼ teaspoon of baking soda to cut the acidity. You’ll see foamy bubbles that are a slightly darker color rise to the top — skim those off and toss them. Taste and if the sauce is still pretty acidic, add a tiny bit more baking soda if needed, but don’t overdo it.

Baking soda added to sauce and then a spoon skimming the foam from the top.

Step 4- Simmer with onion and garlic.

Once the foam is gone, toss in the onion and the rest of the garlic. Reduce the heat to low and let it simmer. An hour is great, but longer (like 3 hours) is even better if you have time. Partially cover to avoid splatter.

A spoon stirring the sauce and then onion and minced garlic added.

Step 5- Finish and serve.

Once your sauce is done simmering, remove the onion and garlic. Stir in the basil. And that’s it — enjoy now over pasta with some Romano cheese or save for later!

Frequently Asked Questions

How long does marinara sauce last in the fridge?

Stored in an airtight container, it will stay fresh in the fridge for 5-7 days. Reheat on the stovetop or in the microwave.

Is marinara sauce the same as spaghetti sauce?

Sort of. Spaghetti sauce is catch-all term used by many Americans to describe a red sauce served over pasta. So technically marinara sauce could fall into that category. Some of the snootier Italian-Americans I know like to say that anyone who calls it spaghetti sauce is definitely not Italian and uses it to question the authenticity of their recipe, but around here, I say call it hat you want, just don't add sugar!

Can I make marinara sauce with fresh tomatoes?

Yes! Just peel remove seeds and puree them first. You’ll need about 10 ½ cups of fresh tomatoes instead of the canned version. In my experience this tends to be thinner, so adjust the water (if any). It's also more time consuming.

A jar of tomato sauce with fresh basil behind it.

Tips For Making Marinara Dip Sauce

Don't burn the garlic! It turns bitter quickly, so watch it closely. Once it's golden and fragrant, move on to the next step. If it does happen to burn, wash the pan out and start over, or the burnt flavor will ruin your sauce.
Don't skip the baking soda. This is how you remove acidity without adding sugar.
But start small with the baking soda! You can always add more, but too much makes it bitter.
If you have the time, let it cook low and slow. It’s delicious in under an hour, but even better when the flavors have more time to develop.
Customize the thickness by adding a little more water for a thinner sauce or less water for a heartier, thicker consistency.
Ingredients to prep ahead- Peel and poke the garlic and onion in advance to save time.
Leftovers and storage- Store in the fridge up to 5 days or freeze for up to 3 months in airtight containers.

A jar of marinara sauce from above with a napkin and basil behind it.

What To Serve With Marinara Sauce

This tasty sauce is versatile enough for a variety of dishes, from a simple spaghetti with marinara sauce to pizza, sub sandwiches, or stuffed peppers. You can even use it as a dip for breads, veggies, and more! Here are a few easy recipes to make a complete meal:

Other Italian Recipes To Try

Love this recipe? Please leave a 5 star ⭐️⭐️⭐️⭐️⭐️ rating in the recipe card below ⬇️ and/or a review in the comment section further down. Check out my Amazon Store for all my favorite tools, including those used in this recipe. And follow @thelifejolie on Instagram and TikTok!