Instructions
Preheat your oven to 160°C (140°C fan)/gas mark 3. Begin by gently softening the diced celery, chopped onion, sliced carrots, bay leaves, and one sprig of thyme in a casserole dish with a tablespoon of vegetable oil and butter for about 10 minutes. Stir frequently to ensure the vegetables release their sweetness without browning. Next, sprinkle the flour over the softened vegetables and stir thoroughly to cook out the raw taste. Add the tomato purée, Worcestershire sauce, and crumble in the beef stock cubes, mixing well to combine all the flavors. Gradually pour in 600ml of hot water, stirring constantly to create a smooth, rich gravy. Add the feather blade beef chunks to the casserole, bringing the mixture to a gentle simmer on the stovetop. Cover with a lid and transfer to the preheated oven to cook slowly for 2 hours and 30 minutes. After this time, remove the lid and continue cooking uncovered for an additional 30 minutes to 1 hour, until the meat is incredibly tender and the sauce has thickened beautifully. While the beef cooks, prepare the potatoes by boiling them in salted water until they are about three-quarters cooked through. This parboiling step ensures they will finish cooking perfectly in the oven without becoming mushy. Once the beef is ready, transfer it to a baking dish. Slice the partially cooked potatoes into 1cm thick rounds and toss gently with a little seasoning, the remaining vegetable oil, and the thyme leaves picked from the remaining sprigs. Layer the potato rounds over the beef mixture, then scatter both mature cheddar and Parmesan cheese evenly across the top. At this point, the pie can be covered and refrigerated for up to a day or frozen for up to three months, making it an excellent make-ahead meal. When you're ready to serve, increase your oven temperature to 200°C (180°C fan)/gas mark 6. Bake the uncovered pie for 30 to 40 minutes until the potato topping is golden brown, crisp around the edges, and the sauce is bubbling up enticingly from beneath. Let the pie rest briefly before serving alongside a generous helping of fresh peas for a classic, satisfying meal.