|Source: Barb Apel (2004)|
|Prep time: 20 minutes|
Break up lettuce in a 9 x 13-inch pan. Sprinkle onion and celery over lettuce. Mix sour cream and sugar; pour over lettuce. Mix Miracle Whip and vinegar. Pour over salad. Do not toss! Sprinkle with bacon, then Parmesan cheese. Cover and refrigerate at least 2 hours or overnight.