Philly Cheesesteak Cheesy Bread: The Ultimate Crowd-Pleasing Comfort Food

Heat 1 tbsp olive oil and 1 tbsp butter in a large skillet over medium heat. Add sliced onions and green bell peppers; cook for 6 to 8 minutes until softened and caramelized. Transfer to a plate.

Increase skillet heat to medium-high. Add shaved steak, garlic powder, salt, and pepper. Cook for 2 to 4 minutes until browned. Stir the caramelized peppers and onions back into the skillet with the steak.

Preheat oven to $375^\circ\text{F}$ ($190^\circ\text{C}$). Slice bread in half lengthwise and place on a baking sheet. Spread garlic butter over the cut sides and bake for 5 minutes until lightly toasted.

Line the pre-toasted bread with provolone slices. Spoon the steak, pepper, and onion mixture evenly over top. Finish with shredded mozzarella and cheddar cheese.

Bake for 10 to 15 minutes until the cheese is melted and bubbly. Optionally broil for 1 to 2 minutes for golden spots. Let cool 3 minutes before slicing.