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Mushroom And Swiss Burger Foil Packets

Juicy burgers with buttery mushrooms and melty Swiss cheese, all cooked in convenient foil packets for a hands-off dinner.
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Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings: 4 servings
Course: Dinner, Main Course
Cuisine: American, Outdoor
Calories: 450
Ingredients Method Notes

Ingredients
  

For the burgers
  • 1 lb Ground beef (80/20) Preferred for juicy burgers
  • 4 slices Swiss cheese Or shredded Swiss if preferred
  • 8 oz Mushrooms (white or cremini) Sliced
  • 1 Onion Thinly sliced
  • 2 cloves Garlic Fresh or a pinch of garlic powder
  • 4 tsp Butter A small pat in each packet for flavor
  • 2 tsp Worcestershire sauce For depth of flavor
  • 1 tsp Salt
  • 1 tsp Pepper
  • 2 cups Potatoes or sliced zucchini (optional) For a heartier meal
  • 4 sheets Heavy duty foil Or double layer regular foil

Method
 

Preparation
  1. Heat the grill to medium heat, or preheat the oven to 400°F.
  2. Tear off four big sheets of foil. If using regular foil, double it up.
  3. Shape your patties, approximately 1/3 to 1/2 lb each, pressing a small dent in the center to prevent puffing.
  4. In a bowl, toss sliced mushrooms and onions with salt, pepper, garlic, Worcestershire sauce, and melted butter.
  5. Assemble each packet: layer a small bed of mushrooms and onions, place the burger patty on top, add more mushrooms and onions, and top with a small pat of butter.
  6. Seal the foil tightly, leaving space inside for steam to circulate.
Cooking
  1. Grill packets for about 12 to 16 minutes, flipping once halfway through.
  2. In the oven, place packets on a baking sheet and bake for 18 to 22 minutes.
  3. Check doneness carefully by opening one packet. Pull burgers when they reach 160°F, then add Swiss cheese on top and reseal for 1 to 2 minutes until melted.

Notes

Prep packets ahead of time and keep in the fridge. For even cooking, add thinly sliced potatoes if desired. Clean hands and surfaces well after handling raw ground beef.