Cauliflower and Ham au Gratin

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Cauliflower and Ham au Gratin
  • 4Servings

Ingredients

  • Sea salt and black or white pepper
  • 2 small heads or 1 large head cauliflower (about 2 1/2 pounds), trimmed into florets and bite-size stems
  • 3 tablespoons butter
  • 1 large shallot, finely chopped
  • 2 rounded tablespoons flour
  • 1/2 cup dry white wine
  • 1 1/2 cups whole milk
  • Freshly grated nutmeg
  • 1 tablespoon dijon mustard
  • 1 cup shredded gruyere cheese (about 4 ounces)
  • 1/2 pound french-style ham, prosciutto cotto or rosemary ham, cut into 1/4-inch pieces
  • 1/2 cup grated parmigiano-reggiano cheese
  • A generous handful flat-leaf parsley, finely chopped

Preparation

Position a rack in the lower third of the oven and preheat to 500 degrees ; or preheat the broiler. In a large pot, bring a few inches of water to a boil, salt it, add the cauliflower and cook until crisp-tender, about 5 minutes. Drain and return to the pot.

Meanwhile, in a saucepan, melt the butter over medium heat. Add the shallot and cook for 3 minutes. Sprinkle in the flour and stir for 1 minute. Whisk in the wine, then the milk; heat through and season with sea salt, pepper and nutmeg to taste. Cook until thick enough to coat the back of a spoon, 2 to 3 minutes. Stir in the mustard and gruyere until melted, then remove from the heat.

Stir the ham and the gruyere sauce into the cauliflower, then transfer to a large, shallow casserole. Top with the parmigiano-reggiano and bake or broil until brown and bubbly, about 5 minutes. Remove from the oven and top with the parsley.