Olive Oil: I like using extra virgin olive oil for its delicious flavor, but feel free to use another vegetable oil if you prefer (sunflower oil, avocado oil, corn oil, coconut oil).

Garlic: Fresh garlic will work best as it will really amp up the flavor of this homemade tomato sauce. If you don’t have fresh garlic, you can also use minced dried garlic instead.

Onion: I recommend using fresh onions because as they cook, the flavor from the caramelized onions is just incredibly beautiful and tasty. I used yellow onion, but you can also use white onions or red onion. For a chunkier tomato sauce, you can chop them roughly, but for a less chunky sauce, dice the onions as finely as possible.

Tomato puree: You can either make your own tomato puree (by blending strained tomatoes) or use store-bought tomato puree directly.

Italian Seasoning: I like the flavors in the Italian seasoning blend. (Alternatively, you can always make your own by using a mix of dried basil, dried oregano, dried rosemary, dried parsley and dried thyme).

Salt: I used normal table salt, but you can also use Himalayan pink salt as well.

Water: I use filtered water, but feel free to use vegetable broth if you prefer.

Sweeter Sauce: If you prefer a sweeter sauce, you can add a tablespoon of granulated sugar in the last 10 minutes and stir well as the sauce simmers to reduce the acidity of the tomatoes. If you are diabetic or insulin-resistant, I highly recommend using granulated monkfruit sweetener (a 1:1 sugar substitute that is zero glycemic index and will not raise your blood sugar).

Storing: To store, pour the cooled gluten-free tomato sauce into an airtight container and store in the refrigerator for up to 3 days. This is an excellent sauce for the base of any pizza as well, such as this delicious caprese pizza (made with our favorite gluten-free pizza crust).

Freezing: To freeze, place the tomato sauce in freezer-safe airtight containers or freezer bags and freeze for up to 2 months. To thaw the sauce, place the containers or freezer bags under running water for a few minutes and then remove sauce from container.