In a medium bowl, whisk salad dressing ingredients until creamy. Pour into a jar, cover with a lid, and chill for at least an hour. Several hours or overnight even better.
Once chilled, spread one side of a each slice of bread with the dressing. Layer with lettuce, tomato, turkey, havarti, avocado, and bacon. Place on top slice of bread and slice corner-to-corner. Take a big bite and enjoy!