Toast the bread until lightly golden. Lightly butter both sides of each slice (about 1 teaspoon per slice).
12 slices sourdough sandwich bread, 4 tablespoons unsalted butter
Lay out 8 pieces of bread. Spread 1 tablespoon mayo on one side of each slice.
¾ cup mayonnaise
To 4 of the slices, layer on the romaine and tomato. Season lightly with salt and pepper. Top with the bacon.
4 leaves romaine lettuce, 8 slices tomato, Kosher salt and freshly ground black pepper, 8 slices cooked bacon
To the remaining 4 pieces of bread, layer on the cheese, turkey, and ham. Place this stack ham side up on top of the bacon layered bread.
4 slices cheddar cheese, 8 slices deli turkey, 8 slices deli ham
Spread 1 tablespoon mayo on one side of the remaining bread. Place them mayo side down on top of the turkey.
Use toothpicks to secure the sandwiches, slice and serve.