Preheat your campfire grill or set up a campfire with a grate over the flames.
Place the split English muffins or bagels on the grill or grate, cut-side down, and toast until golden brown.
In a skillet or cast-iron pan, cook the eggs over the campfire until they are cooked to your desired consistency.
Once the eggs are cooked, assemble each sandwich by placing a cooked sausage patty or crispy bacon slice on the bottom half of each toasted English muffin or bagel.
Top the sausage or bacon with a cooked egg and a cheese slice.
Place the top half of the English muffin or bagel over the cheese to complete the sandwich.
Repeat the process to make the remaining sandwiches.
Serve the Campfire Breakfast Sandwiches hot, and enjoy the melty goodness!