Char tomatoes in hot pan or on griddle. do not remove tomato skins. In Magic Bullet or blender process 3 unpeeled tomotoes, garlic, and chilis until nearly smooth. Add in remaining tomatoes one at a time and blend until uniformly chunky.
2
cook onion in a non-stick pan over low heat, adding water or broth if desired to keep from sticking. Cook until onion is softened. Add pureed sauce and raise heat, cooking until sauce is thickened.
