Toast your bread with butter, I used a good quality iron skillet to toast the bread slices. To toast the bread with butter using the skillet, first add a tablespoon of butter to the hot iron skillet and place one of the slices. Toast in low to medium heat for about a minute or until the bottom side is crispy and lightly golden brown, flip the bread and toast the other side too. Once the first slice of bread is toasted, transfer it from the pan or skillet and add another tablespoon of butter and repeat the process to toast the second slice of bread too. Keep the toasted bread slices aside.
Take the boiled egg in a bowl and chop the boiled egg into very small pieces.
Add the mayonnaise, salt and ground black pepper to the chopped boiled egg and stir together to form a nice, creamy and spreadable mixture.
Take one slice of toasted bread and add the mayo egg mixture to it, and evenly spread the mixture over the slice.
Add the extra two teaspoons of mayonnaise to the second slice of bread and evenly spread it.
Take the second slice of bread (which is spread with mayo on one side) and place the slice on top of the first slice with the mixture, gently press the slices together. You may cut the boiled egg sandwich in triangles if you wish, which will make it easy to serve and eat, especially if you are serving for kids.
Enjoy the easy, simple and delicious hard boiled egg sandwich with mayonnaise for breakfast, snack or even dinner as you wish.