Prepare Ingredients: Gather all the ingredients and ensure that the turkey, bacon, lettuce, and tomato are ready for assembly.
Toast the Bread: Toast the three slices of bread to your preferred level of crispiness. Allow them to cool slightly before assembling the sandwich.
Spread Condiments: On one side of each slice of bread, spread a thin layer of mayonnaise. On another slice, spread Dijon mustard. These condiments will add a zesty flavor to the sandwich.
Layer the Turkey: Place one slice of toasted bread, mayo side up, on your work surface. Add one slice of turkey, followed by another slice of bread (mayo side up).
Add Bacon and Vegetables: Place the three slices of bacon on top of the second bread slice. Add the lettuce leaves and tomato slices.
Complete the Stack: Add the third slice of bread on top, mayo side down. Press down gently to secure the layers.
Secure with Toothpicks: Using toothpicks, secure the sandwich in quarters to prevent it from falling apart while cutting.
Slice and Serve: With a sharp knife, carefully slice the sandwich diagonally, creating two triangular halves. Serve immediately and enjoy the classic flavors!