Cheesy Celeriac Leek Rosemary Gratin Food

CHEESY CELERIAC, LEEK & ROSEMARY GRATIN

Steps:

• Heat the butter in a saucepan. Add the leeks, rosemary and bay leaf, then cover and cook very gently over a medium-low heat for 15-20 mins until the leeks are soft. Pour over the milk and almost all the cream, then season and bring to the boil. Remove from the heat and leave to cool a little, then scoop out the bay leaf.
• Pour a little of the leek mixture into an ovenproof gratin dish. Arrange a layer of celeriac in the dish, then season. Spoon over some more of the leek mixture and scatter with a little cheese. Repeat the process, alternating between layers of the leek mixture, cheese and celeriac slices, then finish with a drizzle of cream and the last of the cheese. Can be prepared up to a day ahead and kept in the fridge.
• Heat oven to 180C/160C fan/gas 4. Bake the gratin for 1 hr-1 hr. 15 mins until the top is golden and the celeriac is tender when poked with a knife. If the gratin is browning a little too much, cover the dish in foil. Can be chilled, then reheated in a microwave or oven on a low heat with a drizzle more cream.

CHEESY LEEKS

Steps:

• Heat the oven to 220C/200C fan/gas 7. Tip the leeks into a steamer basket and steam for 6-8 mins until bright green and just becoming tender.
• Meanwhile, heat the butter and flour together in a saucepan, stirring until you have a thick paste. Add the milk, a splash at a time, stirring continuously until all the milk has been added. Cook for 2-3 mins more until the sauce has thickened enough to coat the back of a spoon. Stir in most of the Yeo valley Organic mature cheddar, the mustard and some seasoning.
• Fold the steamed leeks into the cheese sauce, then tip everything into an ovenproof baking dish. Scatter over the breadcrumbs, thyme and remaining cheese, then bake for 20 mins until golden, crisp on top and bubbling at the edges. Leave to stand for 5 mins before serving.