Season steaks, if desired, with salt and ground black pepper.
Heat 1 tablespoon Olive Oil in 12-inch skillet over medium-high heat and cook steaks, turning once, 4 minutes or until desired doneness. Remove steaks and set aside.
Add remaining Olive Oil to same skillet and cook onion, stirring occasionally, 3 minutes. Add red pepper flakes and wine and cook 1 minute. Add Sauce and oregano. Cook, stirring occasionally, 5 minutes or until slightly thickened. Return steaks and juices to skillet, then top steaks with cheese. Simmer covered 2 minutes or until cheese is melted.