40 minutes of cooking time
- Heat olive oil in a skillet over medium heat, add chopped onion, and simmer for about 5 minutes, until soft. Then add the minced garlic and cook another minute.
- Add the remaining ingredients to the skillet and cook over low heat for about 30 minutes, until the sauce thickens.
- Cool the sauce at room temperature, then place in a sealed container or jar and store in the refrigerator.