Simple San Marzano Marinara

A super simple and unbelieveably delicious homemade tomato sauce.

Simple San Marzano Marinara

Only 9 ingredients, 20 minutes prep, then simmered to perfection!

This post may contain affiliate links. Please read our Disclaimer.

If you follow my Instagram stories, you know my son loves pasta with a variety of tomato sauces and he loves to make his own pasta and sauces.  And his pasta and his sauces are always amazing!

And what’s really fun is that he cooks based on what he’s in the mood for and what flavor he wants.  And he cooks like my great-grandfather… without a recipe and by taste and feel.  So no two sauces are ever exactly the same and when you all ask for the recipe, I flip a bit.

SO a few weeks ago, when we had February break and a staycation, I asked my son to recreate one of his favorite sauces so that we could measure and write down directions.  This is it!

This simple marinara sauce is made with only 9 real, whole foods ingredients: olive oil, onion, dried oregano, crushed red pepper (optional), garlic, tomato paste, San Marzano tomatoes, fresh basil, kosher salt.

The key is using a high quality ingredient — the San Marzano tomatoes.

And the first step is to puree them and set aside, because once you get started, the sauce comes together really quickly and then simmers to perfection.

The other key is making sure the onions are diced really finely because the sauce is not pureed once it starts simmering.

Then it is as simple a sauteing the onions with olive oil and oregano, adding garlic, then tomato paste, then the pureed San Marzano tomatoes, salt and basil. Let is simmer for an hour minimum and you have a simple and delicious homemade tomato sauce!


Sauce is shown here with my son’s Homemade Gluten-Free Pasta — definitely worth trying if you like pasta because is such an amazing texture and flavor!

Hope you love this sauce as much as we do!

Scroll down for recipe and leave a comment if you try.


Share on Facebook Pin Recipe Print Recipe Rate this Recipe
5 from 1 vote

Simple San Marzano Marinara

This simple homemade tomato sauce takes only 20 minutes active time to prep and put together, then simmers to perfection!
Prep Time10 minutes
Cook Time1 hour 10 minutes
Total Time1 hour 20 minutes
Course: Dinner, Veggies, Pasta Sauce
Cuisine: Vegan, Gluten-Free, Vegetarian
Author: Healthy Gluten-free Family


  • 1 small onion diced very finely (about 1/2 cup)
  • 3-4 tablespoons olive oil enough to really coat bottom of pan
  • 2 1/2 teaspoons dried oregano
  • 1/4 teaspoon dried red pepper flakes optional
  • 2 cloves garlic minced
  • 2 6 oz cans plain tomato paste
  • 3 28 oz cans San Marzano peeled tomatoes
  • 1/4 cup fresh basil chopped or more to taste + some for garnish
  • 1 1/2 - 3 teaspoons kosher salt


  • Before you start, prep the tomatoes. One can at a time, pour the tomatoes and the liquid into a food processor and run for about 30-40 seconds until fully pureed. Transfer pureed tomatoes to a large bowl. Set aside.
  • On medium heat, heat olive oil in a pan until shimmering, not burning. Add onions, oregano and red pepper flakes (if using) and saute for 5-6 minutes or until onions are translucent, adding a bit more olive oil as needed if onions looking dry.
  • Add minced garlic and saute for 1 minute
  • Turn heat to low, add tomato paste to onion mixture and stir well to combine and let cook for 1 minute. You do not want burnt tomato paste.
  • Add pureed tomatoes, raise heat to medium and stir well to combine so that there are no clumps of pureed tomatoes. Add salt and stir well to combine. Add fresh basil. TIP: If you want a stronger basil flavor, don't add it until 30 minutes before serving. Stir well to combine.
  • Bring to a simmer, then lower heat to low and simmer for minimally an hour but as long as you can.
  • Taste and adjust seasonings as desired.
  • Serve with your favorite pasta! Enjoy!
Tried this recipe?Mention @healthyGFfamily or tag #healthyGFfamily!


Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating