Place coleslaw and chopped apple in a large mixing bowl.
Combine dressing ingredients in a small bowl. Pour dressing over the coleslaw and apples and toss to combine. Sprinkle with blue cheese and crumbled bacon.
Refrigerate leftovers in an airtight container.
Notes
Can be made several hours ahead and stored in an airtight container in the refrigerator. Reserve crumbled bacon and add just before serving.