01 - Toast all six bread slices until golden and crisp. Lightly butter with unsalted butter if desired for extra richness.
02 - Cook bacon in a skillet over medium heat until crispy and browned. Transfer to paper towels to drain excess fat.
03 - Lay out all toasted bread slices. Spread a thin, even layer of mayonnaise on one side of each slice.
04 - On two bread slices, arrange lettuce leaves and tomato slices. Season lightly with salt and pepper. Place two turkey slices on each.
05 - Place a second slice of bread on each sandwich, mayonnaise side down. Spread additional mayonnaise on the top of these slices.
06 - Add remaining turkey slices and crispy bacon strips to each sandwich. Top with additional lettuce and tomato if desired.
07 - Finish each sandwich with the remaining bread slices, mayonnaise side down.
08 - Press each sandwich gently. Secure with cocktail sticks if needed. Slice diagonally into halves or quarters. Serve immediately with chips or pickles.