Mushroom & Swiss Burger Foil Packets

These juicy Mushroom & Swiss Burger Foil Packets are a fun twist on classic burgers — cooked in foil for easy prep, cleanup, and incredible flavor infusion. Perfect for grilling, campfires, or even baking in the oven, each packet delivers a melty, savory burger loaded with mushrooms, Swiss cheese, onions, and seasoning.

📝 Ingredients for Mushroom & Swiss Burger Foil Packets

• 1 lb (450 g) lean ground beef

• 1 tsp Worcestershire sauce

• 1 tsp garlic powder

• 1 tsp onion powder

• Salt & pepper, to taste

• 1 tbsp olive oil (optional for sautéing)

• 8 oz (225 g) fresh mushrooms, sliced

• 1 small onion, thinly sliced

• 4 slices Swiss cheese

• 4 tbsp butter, cubed

• 4 brioche/burger buns (optional, for serving)

• Foil sheets (12×12-inch each)

🔧 Instructions

1. Prep the Foil Packets
   Cut 4 large pieces of foil and lightly grease with cooking spray or olive oil.

2. Make Burger Patties
   In a bowl, mix ground beef with Worcestershire, garlic powder, onion powder, salt & pepper. Form into 4 equal patties.

3. Add Veggies
   Divide sliced onions and mushrooms evenly into the center of each foil sheet. Place a beef patty on top. Dot each with cubes of butter.

4. Seal Foil Packets
   Wrap tightly, sealing edges so no steam escapes.

5. Cook

   • Grill/Campfire: 15–18 minutes over medium heat, turning halfway.

   • Oven: Bake at 400°F (200°C) for 20–25 minutes on a baking sheet.

6. Add Cheese
   Carefully open the foil (watch for steam) and place a slice of Swiss cheese on each patty. Reseal loosely until melted (1–2 minutes).

7. Serve
   Serve straight from the packet or place onto toasted buns with your favorite toppings.

📌 Notes & Tips

• Mushroom Variety: Try baby bella or cremini for deeper flavor.

• Make It Lighter: Substitute ground turkey or chicken.

• Add Veggies: Include sliced bell peppers or zucchini for extra nutrition.

• Cheese Swap: Gruyère, mozzarella, or provolone make tasty alternatives.

• Crispier Top: Broil open foil packet for 2 minutes at the end.

🍽️ Serving Suggestions

Serve with:

• Grilled corn on the cob

• Potato salad

• Green salad or coleslaw

• Sweet potato fries

💪 Nutritional Information (per serving, without bun)

🌟 Benefits

• Mess-free cooking & cleanup

• Great for outdoor grilling and camping

• Customizable for each person’s taste

• Portion-controlled packets

❓ Q & A

Q: Can I prep these foil packets ahead of time?
A: Yes! Assemble up to a day in advance and refrigerate until ready to cook.

Q: How do I know it’s fully cooked?
A: Use a meat thermometer — the internal temperature should reach 160°F (71°C).

Q: Can I freeze them?
A: Yes — freeze uncooked packets for up to 2 months. Thaw overnight before cooking.

Q: Does this work without mushrooms?
A: Absolutely — skip them or swap in veggies like bell pepper, zucchini, or squash.