Cauliflower-Broccoli Salad

1 head cauliflower
1 bunch broccoli
1 c. celery
1/2 c. onion
2 c. Miracle Whip
1 c. bacon bits
1 c. shredded Mozzarella cheese
5 Tbsp. vinegar
5 Tbsp. sugar

Mix together and let stand for at least 2 hours. Keeps well in refrigerator for a week.