1 cup mayonnaise
1/2 cup milk
2 tablespoons cider vinegar
1 tablespoon sugar
1/2 cup mixed nuts (optional)Instructions
In a large bowl, toss broccoli, cauliflower, carrots, peas, celery, grapes, and onion. In a small bowl, whisk mayonnaise, milk, vinegar, and sugar; pour over broccoli mixture and toss to coat. Sprinkle with nuts if desired.