Gather bread, bacon, lettuce, tomato, mayonnaise, salt, and pepper
Cook the bacon until crisp
Drain the bacon on paper towels
Toast the bread if desired
Wash and dry the lettuce
Slice the tomato
Spread mayonnaise on one or both slices of bread
Season the tomato slices with salt and pepper
Place lettuce on one slice of bread
Add tomato slices on top of the lettuce
Add bacon on top of the tomato
Close the sandwich with the second slice of bread
Cut the sandwich in half and serve