Steps
1. Heat a skillet on medium-high heat with a pat of butter.
2. Fry the egg until cooked through, about 2 minutes each side.
3. Spread mayonnaise on one side of the bread.
4. Place the fried egg on top of the mayonnaise-coated bread slice.
5. Top with the slice of cheese and cover with the remaining bread slice.
6. Enjoy your homemade cheesy egg sandwich!