CELERY GRATIN RECIPES

Steps:

• Place a rack in the middle of the oven and preheat to 450 degrees F. Butter an 8-by-8-by-2-inch baking dish or an 8-cup gratin dish.
• Melt 3 tablespoons of the butter in a medium saucepan over medium heat. Whisk in the flour until smooth. Cook, stirring, for 1 minute. Add the milk, 1 1/2 teaspoons salt, and nutmeg and bring to a boil while whisking constantly. Lower the heat and simmer, stirring occasionally, until the white sauce is thickened, about 10 minutes. Season with pepper. Remove from the heat.
• Meanwhile, bring about 1-inch of water to a boil in a large saucepan and set up a collapsible steamer on top. Put the broccoli in the steamer and season with salt. Cover, and steam until crisp-tender, about 5 minutes. Put the broccoli in the prepared dish, sprinkle with half of the cheese and pour on the sauce. Cover with the remaining cheese.
• Melt the remaining 1 tablespoon butter in a medium skillet over medium-high heat. Add the bread crumbs and cook, stirring, until lightly browned, about 2 minutes. Cover the gratin with the bread crumbs. Bake until lightly browned and bubbly, about 20 minutes. Serve immediately.
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Steps:

• For the gratin, bring the stock to a simmer in a large saucepan. Add the fish and poach for 1 minute. Add the scallops and poach for another minute. Add the prawns and poach for a final minute. Remove all the seafood with a slotted spoon and set aside. Add the wine, bring to the boil and reduce for 5 minutes. Then add the milk and cream and reduce to a simmer.
• Meanwhile, melt the butter in another large saucepan, add the leeks and cook for about 5 minutes until soft. Add the flour, stir well and then add the milk and stock mixture, a ladleful at a time. Keep stirring until all the liquid is incorporated and the sauce is smooth with no lumps. Bring the sauce to the boil, turn down the heat and leave to simmer for about 15 minutes. Preheat the grill to high.
• Grease six shallow ovenproof gratin dishes or one large baking dish measuring about 30x25cm/12x10in. Add the poached fish, scallops and prawns to the leek sauce and season with salt and pepper. Stir in the parsley and transfer the mixture to the gratin dishes or dish.
• Mix the cheese with the breadcrumbs and sprinkle over the top of the gratin. Place under the hot grill for 10 minutes until golden-brown and the contents is bubbling.
• For the caramelised apples, melt the butter in a non-stick frying pan. Add the caster sugar and stir until the sugar has dissolved. Add the apple chunks and stir to coat them in the caramel. Cook for about 10 minutes, or until the apples have softened and are covered in the caramel sauce.
• Serve the gratin with the caramelised apples and bread on the side.