Heat olive oil in a large skillet over medium-high heat

Add sliced onions and bell peppers, sauté for 4–5 minutes until softened

Add mushrooms if using and cook for another 2–3 minutes

Remove vegetables from pan and set aside

In the same pan, add ground beef or sliced steak

Cook for 5–7 minutes, breaking apart if using ground beef, until browned

Drain excess fat if needed

Add minced garlic and cook for 30 seconds until fragrant

Stir in Worcestershire sauce, salt, pepper, and paprika

Mix well and cook for another 1–2 minutes

Return cooked vegetables to the pan and combine

Reduce heat to low

Sprinkle cheese evenly over the mixture

Cover the pan and let cheese melt completely

Prepare bowls with a base of rice or cauliflower rice

Spoon the cheesesteak mixture over the base

Garnish with fresh parsley if desired

Serve hot and enjoy