Heat the oil in a deep frying pan. Add the onions and celery and fry over a high heat for about 3 minutes, until they are beginning to soften. Add the mince and brown quickly, breaking it up with two wooden spoons. Add the garlic and tomato purée and stir for a few seconds.

Add the tomatoes, stock, Worcestershire sauce and redcurrant jelly. Stir to combine and season with salt and pepper. Cover and reduce the heat to a low simmer, then simmer for 30–35 minutes.

Melt the butter in a frying pan, add the mushrooms and fry them for a minute over a high heat. Put a lid on the pan and cook for 2 minutes to draw out any liquid, then remove the lid and fry for 2 minutes over a high heat to evaporate the liquid. Add the mushrooms and the thyme to the mince, then stir well.

Preheat the oven to 160°C/140°C fan/Gas 3. Cook the pasta in boiling salted water according to the packet instructions – keep it al dente. Drain well and run under cold water. Stir the pasta into the mince, then taste to check the seasoning.

Spoon everything into the ovenproof dish. Sprinkle with both cheeses and bake in the oven for 25–30 minutes until golden and bubbling around the edges. Serve piping hot, with a green or tomato salad.