Step 1: Prep Your Ingredients

Place the ribeye in the freezer for 30 minutes to firm it up for easier slicing. While it’s chilling, slice onions, peppers, and any additional vegetables. Set aside.

Step 2: Cook the Vegetables

In a large skillet, heat 1 tablespoon of vegetable oil over medium heat. Add onions and bell peppers. Cook until soft and slightly caramelized, about 8–10 minutes. Remove from skillet and set aside.

Step 3: Sear the Steak

Add the remaining oil to the skillet. Increase heat to medium-high. Add the thinly sliced ribeye in a single layer. Season with salt and pepper. Cook until browned, 3–5 minutes, stirring occasionally.

Step 4: Combine Meat and Veggies

Return the sautéed onions and peppers to the skillet. Mix thoroughly with the steak. Divide the mixture into 4 even portions.

Step 5: Add the Cheese

Place 2 slices of cheese over each portion of steak mixture in the pan. Cover briefly with a lid or aluminum foil to melt the cheese.

Step 6: Assemble the Sandwiches

Slice the hoagie rolls open (toast them if you like). Use a spatula to scoop the cheesy meat and vegetable mixture into each roll. Serve hot.