Appenzeller Mac and Cheese

  Appenzeller Mac and Cheese   Serves 6 Ingredients 16 ounces shell pasta 3 cups chopped cauliflower florets (chopped into 1-1 ½ inch pieces)  2 cups whole milk  1 tsp Dijon mustard 1 tsp salt  ½ tsp black pepper  ½ cup unsalted butter  ½ cup all purpose flour  2 ½ cups grated Appenzeller cheese  …