Prep Time: 5 minutes
Cook Time: 3 minutes
Spread butter over one side of each slice of bread; turn one slice over onto a sheet of waxed paper. Place one slice of each cheese over bread; top with bacon, tomato, turkey, mayonnaise and remaining slice of cheese. Top with remaining bread, buttered side up.
Cook sandwich in a preheated panini maker or lightly greased waffle iron until golden brown and cheese is melted, about 3 minutes.*