Celeriac and Stilton gratin
Preheat the oven to 180C/350F/Gas 4.
Heat the olive oil and butter together in a pan and gently fry the celeriac for 4-5 minutes, or until beginning to brown. Stir in the cream and cheese, then transfer to an ovenproof gratin dish. Bake in the oven for 10-12 minutes, or until golden-brown on top and bubbling.