750gPotatoesPeeled and chopped into large chunks - Floury potatoes like King Edwards or Maris Piper work best
75mlMilk
40gButter
PinchSalt and pepper
100gCheddar CheeseGrated
Instructions
Heat cooking spray or oil in a large flameproof and heatproof dish on the hob.
Add the onions and fry for 5 minutes until soft.
Stir in the diced lamb.
Pour in the wine and simmer for 3 minutes, stirring often.
Add the peas and carrots and stir well.
Pour in the stock and add the tomato puree, rosemary, and thyme.
Stir together and bring to a simmer.
Cook on a low simmer, stirring regularly until the stock has thickened and reduced, this can take around 1 hour.
While your stock is simmering, prepare the mashed potato topping.
First, add the potatoes to a large pan of water and bring to the boil.
Reduce to a rolling simmer and cook for 20 minutes.
Drain and mash with a splash of milk, a large knob of butter and a pinch of salt and pepper until smooth.
Set to one side and preheat the oven to 180 degrees C (fan-assisted).
Once the stock has reduced, remove the shepherd’s pie filling from the heat and stir.
Spoon (or pipe) on the mashed potato, taking care to spread evenly and cover the filling.
Top with grated cheese.
Bake in a preheated oven for 20 minutes, until the cheese, is golden brown and the filling is bubbling up around the sides of the mash.
Remove from the oven and leave to cool for a few minutes before serving.
Video
Notes
Swap the red wine for extra stock if you prefer.
I use a large Dutch oven ovenproof dish (af link), if you don’t have a flameproof and ovenproof dish like this that can be used on the hob and in the oven, start by simmering the filling in a large frying pan before transferring it into a large ovenproof casserole dish to bake.