For a versatile tomato sauce that you can use in a variety of dishes, keep your seasoning to a minimum and add the appropriate herbs and seasoning during meal preparation.
2 pints jarred tomatoes
1 small can chopped Anaheim chiles
1/2 of a yellow or red onion, coarsely chopped
Place all ingredients in a food processor or blender and pulse just until you get the consistency you prefer. Season with additional salt and cumin if desired. Store in the refrigerator for 7-10 days.