Step 1: Cook the Vegetables
- Heat the olive oil and butter in a large skillet over medium-high heat.
- Add the onions and bell peppers.
- Cook for 5–6 minutes until softened.
- Stir in the garlic and cook for 30 seconds.
Step 2: Cook the Steak
- Add the sliced steak to the skillet.
- Season with Worcestershire sauce, Italian seasoning, smoked paprika, salt, and pepper.
- Cook for 3–5 minutes until the steak is browned but still juicy.
- Remove from the heat and let the mixture cool slightly.
Step 3: Prepare the Pastry
- Preheat the oven to 400°F (200°C).
- Line a loaf pan or baking dish with parchment paper.
- Place one sheet of puff pastry into the pan, allowing the edges to hang over the sides.
Step 4: Assemble the Pie
- Sprinkle half of the provolone or mozzarella cheese over the pastry.
- Spoon the steak and vegetable mixture evenly into the pan.
- Top with the cheddar cheese and the remaining provolone or mozzarella.
Step 5: Seal the Pie
- Place the second sheet of puff pastry over the filling.
- Fold and crimp the edges to seal.
- Brush the top with the beaten egg.
- Sprinkle with sesame seeds if desired.
- Cut 2–3 small slits in the top to allow steam to escape.
Step 6: Bake
- Bake for 35–40 minutes, or until the pastry is puffed and deep golden brown.
Step 7: Rest
- Let the pie rest for 10 minutes before slicing to help the filling set.
Step 8: Serve
- Slice into thick portions and serve hot with fries, potato wedges, or a fresh green salad.
Optional Add-Ins
- Sliced mushrooms
- Jalapeños
- Crispy bacon
- Caramelized onions
- Pepper Jack cheese
- Swiss cheese
- Hot sauce
Tips
- Freeze the steak for 20–30 minutes before slicing to make it easier to cut into thin strips.
- Let the filling cool slightly before assembling so the pastry stays flaky.
- Avoid overfilling the pie to prevent leaks during baking.
- Store leftovers in the refrigerator for up to 3 days and reheat in the oven at 350°F (175°C) for 10–15 minutes to restore the crisp pastry.
Enjoy this flaky, cheesy Philly Cheesesteak Puff Pastry Pie—crispy on the outside, rich and savory on the inside, and guaranteed to become a family favorite! 🥩🧀🥧