Primo Pasta Sauce

1 Medium Onion (chopped)
1 Tbsp Olive Oil
1 -14 1/2 oz can Diced Tomatoes with Basil, Garlic and Oregano
1 can Tomato Paste
1 cup Water
Whole Grain Pasta of Choice

Cook onion in oil in saucepan over medium high heat 3-5 minutes or until tender, strring occasionally. Add undrained tomatoes, tomato paste and water. Bring to a boil; reduce heat and simmer 15 minutes, strring occasionally. Serve over pasta.