Step 1

Heat up 1 tablespoon of olive oil in a medium saucepan over medium-high heat.

Step 2

Add the diced onions and sauté in the hot oil until translucent.

Step 3

Add the minced garlic to the saucepan and stir until fragrant.

Step 4

To the same saucepan, add the tomato puree, dried Italian seaoning, and salt.

Step 5

Cover the saucepan with a lid and simmer for 5 minutes. Add 1 cup of filtered water and simmer until it has thickened again (approximately 20 minutes). (Pro Tip: Longer simmering will result in better flavor as it reduces the acidity provided by tomato puree, so make sure to let the sauce simmer!).

Step 6

Use the sauce straightaway, or pour it into an airtight container and store in the refrigerator for up to 3 days.