Best Philly Cheesesteak Casserole Recipe - How to Make Philly Cheesesteak Casserole

Step 1Preheat oven to 350°. On a large baking sheet, toss hoagie rolls with melted butter and garlic powder. Bake until lightly golden, about 15 minutes.

Step 2In a large skillet over medium heat, heat 1 tablespoon oil. Add onion and peppers and season with salt and pepper. Cook, stirring occasionally until soft, about 8 minutes. Stir in garlic and cook until fragrant, 1 minute more, then transfer mixture to a large bowl.

Step 3Increase heat to medium-high and heat remaining tablespoon oil. Add steak in a single layer, working in batches if necessary. Season generously with salt and pepper and let sear until bottom is deeply golden, 3 minutes. Flip, then sear the other side. Return vegetables to skillet with steak and stir in Worcestershire. Remove from heat.

Step 4Grease a 9"-x-13" baking dish with cooking spray. Spread half the hoagie rolls on the bottom of the dish, then add in half the meat and vegetable mixture. Top with 6 slices provolone and repeat with remaining half of the hoagie rolls and meat and vegetable mixture. Pour broth over, then top with remaining 6 slices of cheese.

Step 5Bake until cheese is melty, 15 minutes.

Step 6Garnish with parsley before serving.