Prep Your Ingredients: Thinly slice ribeye steak against the grain. Dice onions, peppers, and mushrooms.
Sauté Vegetables: Heat olive oil in a skillet over medium heat. Add onions, bell peppers, and mushrooms; sauté until softened and golden brown (5-7 minutes).
Cook the Steak: Push veggies aside, add sliced ribeye to the skillet, season with salt and pepper, and cook until browned (3-4 minutes).
Melt the Cheese: Pour Cheese Whiz or layer provolone over steak mixture; cover with a lid until melted (1-2 minutes).
Assemble Sandwiches: Fill hoagie rolls generously with cheesesteak mixture. Serve immediately.
