Ingredients
Method
Make the patties
- Form ground beef into 4 thin patties and season with salt and pepper. Make them thin so they cook through inside the packets.
Assemble foil packets
- On each foil sheet, layer sliced potatoes and onions. Use a single even layer so the potatoes steam tender.
- Place burger patty on top, then add tomato slices. Arrange tomatoes directly over the beef so they release juices.
- Drizzle with ketchup and mustard. You should see sauce streaks across the top layer before sealing.
- Fold foil into sealed packets. Press seams firmly so no juices leak out.
Cook over the campfire
- Place packets on campfire grate over medium heat. Cook until potatoes are tender and meat is cooked through.
- Cook for 25 minutes, flipping halfway through. Look for gentle bubbling at the packet edges and keep the heat steady.
- Open packets, add cheese slices, and reseal briefly to melt. You should see cheddar melt and start to stretch.
Rest and serve
- Let packets cool for 5 minutes before opening. This helps the filling set so it doesn’t spill when served.
- Serve in packets or on hamburger buns. Choose buns if you want extra grip for the cheesy filling.
Notes
Pro tip: aim for thin, even beef patties and uniformly sliced potatoes so everything finishes at the same time. Refrigerate leftovers in an airtight container for up to 3 days and reheat until steaming; freeze yes—freeze sealed portions for up to 2 months and thaw in the fridge overnight. For a lighter option, use lean ground beef (90% or higher) and reduced-sugar ketchup if desired.
