Heat the olive oil in medium saucepan over med-high heat. Add the onion, garlic, and pepper flakes. Cook unto the onion is tender, 3-5 minutes (Heck could just put that over spaghetti and eat this!) Add the tomatoes, basil, oregano, salt, and pepper. Bring to boil, reduce to simmer, and cook uncovered for 30 minutes. Remove from heat and puree in food mill, food processor, or with stick blender.