Heat the olive oil in a large skillet over medium-high heat. Add the sliced onion and green bell pepper. Cook until softened, usually about 5-7 minutes.
1 tablespoon olive oil, 1 medium onion, 1 green bell pepper
Add the ground beef to the skillet with the vegetables. Break it apart with a spoon and cook until browned and cooked through. Drain off any excess grease.
1 pound ground beef
Stir in the garlic powder, salt, and pepper. Mix well to combine.
1 teaspoon garlic powder, 1/2 teaspoon salt, 1/4 teaspoon black pepper
Cut the hoagie rolls lengthwise, leaving one side hinged. Spoon an equal amount of the ground beef mixture into each roll.
4 hoagie rolls, 1 pound ground beef
Top each with a slice of provolone cheese.
4 slices provolone cheese
Place the cheesesteaks on a baking sheet and place under the broiler for 1-2 minutes, or until the cheese is melted and bubbly.
Serve immediately with your favorite toppings, such as mushrooms or banana peppers. Enjoy your Ground Beef Philly Cheesesteaks!
Optional toppings: mushrooms, banana peppers
