Method
Place the onion, leeks,
garlic and mushrooms in a saucepan with the stock and cook gently
for about 10 mins, until the vegetables are softened, stirring
occasionally. Remove from the heat, drain off the liquid and set
aside.
Meanwhile, cook the broccoli florets in a
saucepan of boiling water for 2 mins. Drain well and set
aside.
Place the butter/margarine, flour and milk in a
saucepan and heat gently, whisking continuously, until the sauce
comes to the boil and thickens slightly. Simmer gently for 3 mins,
stirring.
Reserve about half the sauce. Stir 140g (5oz)
of cheese into the remaining sauce, stirring until melted, then add
the vegetables, chicken, tarragon and seasoning and mix
well.
Spoon half the chicken mixture over the base of
a shallow ovenproof dish or baking tin. Cover this with half the
pasta. Repeat these layers, then pour the remaining sauce over the
pasta to cover it completely and sprinkle with the remaining
cheese.
Bake in a preheated
oven at 180o C/ 350o F/ Gas Mark 4 for 40-45
minutes, until golden brown and bubbling. Garnish with fresh herb
sprigs and serve with a mixed leaf salad and fresh crusty
bread.
By kind permissioan of the British Cheese
Board
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