3 cups broccoli florets, cut into bite-size pieces (about 2 small heads)
2 cups halved and sliced yellow or zucchini squash (14-inch-thick slices)
12 cups sliced carrots (14-inch-thick slices)
12 cup thinly sliced red onion
12 cup thinly sliced radishes
14 cup diced red bell pepper
1 teaspoon salt
34 teaspoon freshly ground black pepper
14 cup cider vinegar
1 teaspoon Dijon mustard
1 teaspoon sugar
12 cup plus 2 tablespoons vegetable oil (such as canola)
14 cup finely grated Parmigiano-Reggiano cheese
In a medium bowl, combine the cabbage, broccoli, squash, carrots, red onion, radishes and red bell pepper. Season with 3 4 teaspoon of the salt and 1 2 teaspoon of the black pepper, and mix well. Set aside.
In a small bowl, whisk together the vinegar, mustard, sugar, remaining 1 4 teaspoon salt and remaining 1 4 teaspoon pepper. While constantly whisking, add the oil in a thin, steady stream until completely incorporated. Stir in the cheese.
Pour the dressing over the vegetables and mix thoroughly. Cover with plastic wrap and refrigerate for at least 20 minutes, or as long as overnight, before serving.