Cook the beef: In a large skillet over medium heat, brown the ground beef. Drain excess fat.

Sauté veggies: Add onions, peppers, mushrooms, and garlic. Cook until softened (about 5–6 minutes).

Flavor it up: Stir in Worcestershire sauce, beef broth, and ketchup (if using). Season with salt & pepper.

Simmer for 5–7 minutes until slightly thickened. If you want it thicker, mix cornstarch + water and stir it in.

Melt the cheese: Lay provolone slices over the beef mixture in the skillet. Cover for 1–2 minutes to melt.

Assemble: Spoon the cheesy beef mixture onto toasted buns or rolls.

🔥 Tips:
Try butter-toasting the buns for extra flavor and sturdiness.

Add jalapeños for heat or use white American cheese for extra creaminess.