I have a cookbook that I purchased in Shipshewana a couple of years ago called 'A Taste of Shipshewana, A Collection of Local Recipes' and it has the following recipe:
(I realize that this does have onion and bacon, but if you leave those out it could be what you are looking for.)
Cauliflower Salad:
1 head cauliflower, cut in flowerets
1 bunch broccoli, cut in small pieces
1 lb. bacon, crumbled
1 medium onion, chopped
Dressing:
2 C. Miracle Whip
1/2 C. sugar
1/3 C. parmesan cheese
Hope this helps!