BEEF, NOT LAMB
Cottage pie is made with beef. Lamb makes shepherd's pie. Old rules still earn their keep.

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RICH BEEF. PROPER GRAVY. GOLDEN CHEDDAR MASH.
This is cottage pie as it ought to be: beef mince cooked until properly browned, a thick savoury gravy with carrots and peas, and a generous roof of buttery mashed potato with crisp, fork-made ridges.
The filling is deliberately thick before it reaches the oven. That keeps the layers distinct and gives you a pie rather than mince swimming beneath a potato raft.
It makes two hearty plates—ideal with buttered greens, extra peas or simply a spoon and a quiet ten minutes.
01400g floury potatoes, peeled and cut into even chunks
0225g butter
0340ml whole milk, warmed
0435g mature Cheddar, finely grated
05A pinch of nutmeg, optional
06250g lean beef mince (5% fat)
071 teaspoon rapeseed or olive oil
081 small onion, finely diced
091 medium carrot, cut into small dice
101 garlic clove, crushed
111 tablespoon tomato purée
121 level tablespoon plain flour
13150ml beef stock
141 teaspoon Worcestershire sauce
15½ teaspoon dried thyme
161 teaspoon dark soy sauce, optional
1760g frozen peas
18½ teaspoon salt, then adjust
19Plenty of black pepper
Tick what you already have. What remains is your shopping list.
Approximate values per generous serving. Ingredient brands, exact weights and cooking losses will alter the final figures.
Cost basis: Approximate UK own-brand supermarket prices, apportioned to the quantities used.
Nutrition basis: Two equal servings using 5% beef mince, whole milk, butter and mature Cheddar. Side vegetables are excluded.
Put the potatoes in a saucepan, cover with cold salted water and bring to the boil. Simmer for 15–18 minutes until completely tender when pierced with a knife.
Meanwhile, heat the oil in a wide frying pan over medium-high heat. Add the mince and cook for 5–6 minutes, breaking it up, until deeply browned. Colour means flavour, so let it catch before stirring.
Add the onion and carrot. Cook for 6–8 minutes until softened. Stir in the garlic and tomato purée for 1 minute, then sprinkle over the flour and stir for another minute.
Gradually stir in the beef stock. Add Worcestershire sauce, thyme, soy sauce if using and black pepper. Simmer gently for 10–12 minutes until glossy and thick enough that a spoon drawn through it leaves a brief trail.
Stir in the frozen peas for the final 2 minutes. Taste and adjust the salt and pepper. Spoon into a roughly 1-litre baking dish and level the surface. Let it stand while you mash the potatoes.
Drain the potatoes thoroughly, return them to the hot pan and allow them to steam dry for 1 minute. Mash until smooth, then beat in the butter and warm milk. Season with salt, pepper and nutmeg if using.
Spoon the mash around the edge first, which seals in the filling, then cover the centre. Rough up the top generously with a fork and scatter over the Cheddar.
Bake at 200°C fan / 220°C conventional / Gas 7 for 20–25 minutes until bubbling at the edges and deeply golden. Grill for 2–3 minutes at the end if the top needs more colour. Rest for 8–10 minutes before serving.
Cottage pie is made with beef. Lamb makes shepherd's pie. Old rules still earn their keep.
Wet potatoes make loose mash. One minute in the hot empty pan gives a lighter, sturdier topping.
Eight to ten minutes lets the gravy settle so each spoonful holds together.
Deep savoury beef, honest vegetables and a golden mash lid with enough crisp edges to start a minor domestic negotiation.
GRAVY THICK. MASH RIDGED. JOB DONE.