Step 1: Prep the Ingredients
Slice the ribeye steak thinly against the grain. You can freeze the steak for about 15 minutes before slicing to make it easier.
Slice the onions and bell peppers thinly.
Step 2: Sauté the Vegetables
Heat 1 tbsp of olive oil in a large skillet over medium-high heat.
Add the onions and bell peppers to the skillet, seasoning with a pinch of salt and pepper.
Sauté for 5-6 minutes, or until the vegetables are softened and slightly caramelized. Remove from skillet and set aside.
Step 3: Cook the Steak
In the same skillet, add the remaining 1 tbsp of olive oil over medium-high heat.
Add the thinly sliced steak to the skillet, spreading it out in a single layer.
Season with salt, pepper, and garlic powder, and cook for about 3-4 minutes, stirring occasionally, until the steak is browned and cooked through.
Step 4: Add the Cheese
Reduce the heat to low. Return the sautéed onions and peppers to the skillet with the steak.
Divide the mixture into four portions in the skillet, placing two slices of cheese on top of each portion.
Cover the skillet briefly to let the cheese melt over the steak and veggies.
Step 5: Toast the Rolls
While the cheese is melting, place the split hoagie rolls on a baking sheet and toast them in a preheated oven at 350°F for 3-4 minutes, or until they are slightly crispy.
Optional: Spread a thin layer of mayonnaise on the toasted rolls for added flavor.
Step 6: Assemble the Subs
Place each portion of the cheesy steak and veggie mixture onto the toasted rolls.
Serve the subs warm and enjoy!