Step 1

For the pastry base, check the shortcrust pastry sheet is large enough to line the base of your pie dish. If necessary, roll it out a little more on a lightly floured surface. Carefully transfer the pastry and line the base and sides of the pie dish, leaving a small overhang at the top (which will be used to seal the lid). Place in the fridge until ready to use.

Step 2

Preheat the oven to 160C/140C Fan/Gas

Step 3

For the pie filling, heat the oil in a large ovenproof casserole over a high heat. Season the beef and sear the steak in batches, until evenly browned. Transfer to a plate or bowl. Reduce the heat and add a drizzle more oil if necessary. Soften the onions, celery and garlic in the same pan for around 8–10 minutes, stirring frequently. Add the beef and any meat juices back to the pan and stir in the flour until incorporated. Add the thyme, bay leaves and stock.

Step 4

Pour in the stout and add the mushrooms and carrots. Season with salt and pepper and bring to the boil. Transfer to the oven and cook for 2–2½ hours until the beef is tender. Remove from the oven.

Step 5

Taste the pie filling to check the seasoning. Discard the bay leaves and any thyme twigs. Set aside to cool (if you are short of time, spread out the filling on a large baking tray to help it cool faster) – it should be cold enough to avoid melting the fat in the pastry. Once cool, use a slotted spoon transfer the filling into the pastry-lined pie dish and add enough sauce to just cover. Pass any leftover sauce through a sieve and set aside to use as gravy to serve alongside the pie.

Step 6

Preheat the oven to 220C/200C Fan/Gas 7 and preheat a large baking tray.

Step 7

For the pastry lid, brush a little beaten egg around the lip of the shortcrust pastry and place the puff pastry on top. Press together to seal, trim the excess and use a fork to crimp the edges. Cut a small cross in the centre of the pastry lid to allow steam to escape. Use any pastry trimmings to make decorations and use a little beaten egg or water to secure them to the pie. Brush the top of the pie with the remaining egg.

Step 8

Place the pie on the preheated baking tray and bake for 30–35 minutes or until the pastry is crisp and golden. Reheat the gravy and serve alongside the pie.