Endive with Ham and Cheese Sauce

Drop the endives in a pan of boiling salted water, for 5 minutes. Drain and gently squeeze the water out. Cut each one in half and wrap it in a slice of ham. Then arrange them in an ovenproof dish. Pre-heat the oven to 200C/400F. To make the sauce, melt the butter and stir in the flour, mixing and cooking for 2 minutes. Add the mustard and pour in the milk gradually, stirring vigorously. When it boils and thickens, turn down the heat and add the cream and cheese. Cook for a further 5 minutes. Season to taste. Pour the sauce over the endives and finish them in the oven, until brown.