Preheat oven to 450°.
. Place bacon slices on a jelly-roll pan. Bake at 450° for 8 minutes or until crisp.
. Remove bacon from pan, reserving 1 tablespoon drippings. Crumble bacon, and set aside.
. Toss potato and onion with bacon drippings, vinegar, and next 3 ingredients; spoon into pan. Bake at 450° for 20 minutes. Add apple; bake an additional 10 minutes or until tender. Transfer potato mixture to a large bowl. Toss with bacon.