Ingredients

Scale

(Serves 4)

Beef & vegetables:

1½ lbs ribeye or sirloin steak, thinly sliced (freeze 30 min for easier slicing)
2 bell peppers (any color), sliced
1 large yellow onion, sliced
8 oz cremini mushrooms, sliced (optional but adds umami depth)
2 tbsp olive oil or avocado oil
1 tsp garlic powder
1 tsp onion powder
Salt & black pepper to taste

Cheese topping (you love melty cheese!):

8 slices provolone cheese (or Cheez Whiz for authenticity)
Optional creamy boost (you love cream cheese!): 4 oz softened cream cheese + 2 tbsp milk

For serving:

Hoagie rolls (classic)
OR low-carb option: Lettuce wraps or cauliflower “buns” (you love low-carb!)
Hot sauce or banana peppers (optional)

Instructions

1. Prep packets:

Cut four 12×18″ sheets of heavy-duty foil. Lightly oil center of each.
Divide beef, peppers, onions, and mushrooms evenly among packets.
Drizzle with oil; sprinkle with garlic powder, onion powder, salt, and pepper.

2. Seal packets:

Fold foil over ingredients; crimp edges tightly to seal (creates steam chamber).

3. Cook (choose your method):

Grill: Place packets on medium heat; cook 15–20 minutes, flipping once.
Oven: Bake at 400°F (200°C) for 20–25 minutes.
Campfire: Nestle packets in hot coals; cook 20–25 minutes, rotating occasionally.

4. Add cheese & serve:

Carefully open packets (steam is hot!).
Top each with 2 provolone slices (or dollop with cream cheese mixture).
Let sit 2 minutes until cheese melts.
Serve in hoagie rolls or lettuce wraps with hot sauce if desired.

💡 Pro Tips for Perfection:
✅ Slice beef thin—partially frozen steak = paper-thin slices without tearing.
✅ Don’t overfill packets—leave room for steam circulation (prevents soggy veggies).
✅ Low-sodium mastery (you love this!):
→ Skip added salt—rely on garlic/onion powder and cheese for savoriness
→ Boost umami with 1 tsp mushroom powder in seasoning
✅ Low-carb/keto option (you love this!):
→ Skip hoagie rolls entirely
→ Serve in large butter lettuce leaves or over cauliflower rice
→ Net carbs drop from 38g → 8g/serving
✅ High-protein boost (you love this!):
→ Add ½ cup cooked white beans to packets (+7g protein/serving)
→ Use 2 lbs steak for +10g protein/serving
✅ Extra richness: Swirl softened cream cheese into beef before sealing packets (you love cream cheese!).
✅ Make ahead: Assemble packets (uncooked) up to 24 hours ahead; refrigerate. Add 5 min to cook time.

Prep Time & Nutrition (per serving, with hoagie roll):