Cook the bacon: In a skillet over medium heat, cook the bacon until crispy, about 3-4 minutes per side. Remove and set aside on a paper towel to drain.

Toast the English muffin: Split the English muffin in half and toast it until golden brown, about 2-3 minutes.

Cook the egg: In the same skillet, melt the butter over medium heat. Crack the egg into the skillet and cook to your preferred doneness, seasoning with salt and pepper.

Assemble the sandwich: Place the slice of cheese on the bottom half of the toasted English muffin. Add the cooked egg on top of the cheese.

Add the bacon: Place the crispy bacon slices on top of the egg.

Complete the sandwich: Top with the other half of the English muffin and press gently. Serve immediately.