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Philly Cheese Steak Foil Packet Dinners

Philly cheese steak foil packet dinners with steak, peppers, onions, and mushrooms cooked in sealed packets until steaming hot. The foil traps the juices for tender meat and melted provolone with minimal cleanup.
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Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Servings: 4 servings
Course: Main Dish
Cuisine: American
Calories: 720
Ingredients Method Notes

Ingredients
  

  • 1.5 lb sirloin steak thinly sliced
  • 2 bell peppers sliced
  • 1 onion large, sliced
  • 2 cup mushrooms sliced
  • 8 slice provolone cheese
  • 2 tbsp Worcestershire sauce
  • 2 tbsp olive oil
  • 1 tsp garlic powder
  • 0.25 tsp salt to taste
  • 0.25 tsp pepper to taste
  • 4 sheet heavy-duty foil large sheets
  • 4 hoagie rolls optional

Method
 

Assemble foil packets
  1. Divide the sirloin steak, bell peppers, onion, and mushrooms among 4 heavy-duty foil sheets. Keep the layers fairly even so everything cooks at the same pace.
  2. Drizzle each packet with olive oil and Worcestershire sauce. Make sure the sauce coats the steak and vegetables rather than pooling in one spot.
  3. Season each packet with garlic powder, salt, and pepper. Use a light, even sprinkle across the top of the ingredients.
  4. Top each packet with 2 slices of provolone cheese. Place the cheese directly on the steak mixture so it melts during grilling.
  5. Fold foil into sealed packets. Crimp the edges tightly to trap steam while grilling.
Grill and serve
  1. Grill the packets over medium heat for 18-20 minutes, flipping halfway. Look for visible steaming from the packet seams as the cheese melts.
  2. Carefully open the packets and serve in hoagie rolls or as-is. Steam will be very hot, so pause a moment before taking the first bite.

Notes

Pro tip: thinly sliced steak cooks faster and more evenly in foil, so aim for consistently thin pieces. Refrigerate leftovers in a sealed container for up to 3 days; reheat packets in a 350°F oven for 10-12 minutes until hot (cheese may soften further). Freezing is not recommended for best texture. For a lower-carb swap, skip hoagie rolls and serve directly in the packet with extra sliced peppers and onions.