Season the steak with salt and pepper.
Heat olive oil in a skillet over medium-high heat and sear the steak until browned on both sides. Remove and set aside.
Make the Sauce:
In the same skillet, sauté garlic and onion until softened.
Stir in crushed tomatoes, tomato paste, oregano, basil, red pepper flakes (if using), salt, and pepper.
Simmer for 10–15 minutes to let flavors meld.
Combine and Cook:
Return the steak to the sauce and simmer gently for 10–15 minutes, or until the steak reaches your desired doneness.
Serve:
Slice the steak if desired and serve with pasta, rice, or crusty bread to enjoy the sauce.
