Saute tomatoes and onions in a bit of oil or water, for 5 or 10 minutes
Add rest of ingredients and let cook until fairly done
Pour the tomato mixture into a blender. Add a half blender of water and blend well. Be sure to remove the plastic cap from the cover when blending a hot liquid
Pour everything back into the pan and reduce for another 5 or 10 minutes
Garnish with cilantro or basil and serve with bread or croutons of your choice, along with a salad