Mushroom & Swiss Burger Foil Packets

A juicy beef patty smothered in earthy mushrooms and melty Swiss cheese — all cooked in a neat foil packet that seals in flavor and makes cleanup a breeze! Perfect for grilling, camping, or even oven-baking at home.

🔪 Ingredients for Mushroom & Swiss Burger Foil Packets

• • 1 lb (450 g) ground beef (80/20 recommended)

  • 1 tsp garlic powder

  • 1 tsp onion powder

  • 1 tsp Worcestershire sauce

  • Salt & black pepper, to taste

• Vegetables & toppings:

  • 2 cups sliced fresh mushrooms (cremini or button)

  • 1 small onion, thinly sliced (optional)

  • 4 slices Swiss cheese

  • 2 tbsp butter (cut into cubes)

  • Foil sheets (4 pieces, 12×18-inch each)

  • Fresh parsley (garnish, optional)

🧑‍🍳 Instructions

1. Prep the Patties

   • In a bowl, combine ground beef, garlic powder, onion powder, Worcestershire sauce, salt, and pepper.

   • Shape into 4 equal patties, about ½-inch thick.

2. Assemble the Foil Packets

   • Place each patty in the center of a foil sheet.

   • Top each with sliced mushrooms and onions.

   • Add a few butter cubes over the vegetables.

   • Fold and seal packets tightly to keep in steam.

3. Cooking Options

   • Grill: Place over medium heat for 12–15 minutes, flipping halfway.

   • Oven: Bake at 400°F (200°C) for 20–25 minutes

   • Campfire/coals: Cook for 12–15 minutes, turning once.

4. Finishing Touch

   • Carefully open packets (steam alert 🔥).

   • Add a slice of Swiss cheese on each hot burger.

   • Reseal lightly for 1–2 minutes until cheese melts.

   • Garnish with parsley before serving.

🍽️ Serving Suggestions

Serve with:

• Toasted buns or crusty rolls

• Roasted potatoes, coleslaw, or grilled veggies

• Pickles, mustard, or steak sauce on the side

📝 Notes & Tips

• Make thinner patties for quicker cook time.

• Add sliced bell peppers for extra color & sweetness.

• Swap beef for ground turkey or chicken for a lighter version.

• Prep ahead! Assemble packets up to 24 hrs in advance and refrigerate.

⚖️ Nutrition (per serving, without bun)

✅ Benefits

• Minimal cleanup ✔️

• Portion-controlled ✔️

• Great for meal prep, BBQs & camping ✔️

• Mushrooms add antioxidants, Swiss cheese adds calcium ✔️

❓ Q&A

Q: Can I add the cheese before cooking?
A: It’s best to add it at the end; otherwise it sticks to the foil.

Q: Can I freeze the packets?
Yes — assemble without the cheese and freeze up to 2 months. Thaw before cooking.

Q: What’s the best mushroom type?
Cremini or baby bella add deeper flavor, but white button works too.

Q: How do I know they’re done?
Burger should reach an internal temp of 160°F (71°C).