4crispy lettuce leaves (torn into a few smaller pieces)
Instructions
Spread both sides of all of the slices of bread with 2 tablespoons of the mayonnaise. Spray a large skillet or grill pan with nonstick spray and heat over medium-high heat. When the pan is hot, toast the bread for about 1 1/2 minutes on each side until lightly browned. Remove from the pan.
Spread 4 slices of the bread on one side with the remaining mayo, dividing it evenly. Season the toast with salt and pepper. Spread with the mustard, if using, on top of two of the mayonnaise-coated sides of the toast.
Place 1/4 of the lettuce on 2 slices of the mayo and (possibly) mustard-covered bread. Place the turkey on the lettuce, then place the simply toasted 2 pieces of bread on top of the turkey. Stack the tomatoes and bacon on top of the toast, dividing them evenly, then divide the remaining lettuce leaves on top of the bacon. Top with the last 2 pieces of toast with the mayo side down.
Cut the sandwich into 4 triangles or squares, skewer with toothpicks if using, and serve.
Notes
Toast the bread with mayo for a richer flavor and a more golden color. The pan can be a grill pan or just a regular pan; cast iron is a good choice. You will add more mayo to the interior of the sandwich when you build it. But the mayo (thanks to the oil and the egg yolks) gives the bread a lovely flavor and enhances the browning when it’s toasted.