Shepherd’s Pie with Guinness and Cheddar Mashed Potatoes

Ingredients

• 907 gRusset or Yukon Gold potatoes, peeled and cut into small cubes
• 113 gunsalted butter, cut into pieces and at room temperature
• 45 mlmilk
• 2 mediumegg yolks
• 1 pinchground nutmeg
• 170 gsharp white or yellow cheddar, coarsely grated and divided
• to tastesalt and pepper
• 30 mlolive oil
• 680 gground lamb
• 1 mediumonion, finely chopped
• 1 largecarrot, peeled and finely chopped
• 1 largecelery stalk, finely chopped
• 5 clovesgarlic, finely minced
• 1 tablespoontomato paste
• 2 tablespoonsfresh thyme leaves, minced
• 1 tablespoonfresh rosemary, minced
• 3 tablespoonsplain flour
• 240 mlGuinness stout
• 240 mlbeef stock
• 2 tablespoonsWorcestershire sauce
• to tastesalt and pepper
• 240 mlfrozen peas, or a mixture of peas and sweetcorn
• to tastefresh parsley, chopped

Instructions

1. 1

   Heat the oven

   Preheat the oven to 220°C. Line a baking sheet with baking parchment and set it aside.

2. 2

   Cook the potatoes

   Put the peeled, cubed potatoes in a large pan of cold, salted water. Bring to the boil and cook for 10–15 minutes, until very tender. Drain thoroughly and return the potatoes to the pan.

3. 3

   Mash the potatoes

   Mash the potatoes with the butter until smooth.

4. 4

   Finish the mash

   Fold in the milk, egg yolks, nutmeg and half of the grated cheddar. The mash should be very thick and stiff, not loose and creamy. Season with salt and pepper to taste, then set aside.

5. 5

   Brown the lamb

   While the potatoes cook, heat the olive oil in a large oven-safe skillet or heavy-based pan over medium-high heat. Add the lamb and cook for 12–15 minutes, breaking it up with a wooden spoon, until most of the liquid has evaporated and the meat is golden brown. If there is a lot of rendered fat, remove all but 2 tablespoons.

6. 6

   Soften the vegetables

   Add the onion, carrot and celery. Cook for 5 minutes, stirring often, until softened.

7. 7

   Add the herbs

   Stir in the garlic, tomato paste, thyme and rosemary. Cook for 1 minute, until fragrant.

8. 8

   Stir in the flour

   Sprinkle in the flour and stir for 1 minute to combine.

9. 9

   Thicken the gravy

   Gradually add the Guinness, beef stock, Worcestershire sauce, salt and pepper. Bring to the boil, then lower the heat and simmer for 5–8 minutes, stirring constantly, until the sauce thickens.

10. 10

    Add the peas

    Take the pan off the heat and stir in the frozen peas.

11. 11

    Top with mash

    Use an ice-cream scoop with a mechanical release to place even dollops of mash over the lamb mixture, covering the filling. Start in the centre and work outwards.

12. 12

    Add the cheese

    Sprinkle the remaining cheddar over the top and season lightly with salt and pepper.

13. 13

    Bake the pie

    Set the skillet on the prepared baking sheet to catch any bubbling filling. Bake for 20–25 minutes, until the potatoes are golden and the filling is bubbling.

14. 14

    Rest and serve

    Leave the pie to rest for 5 minutes. Garnish with fresh parsley just before serving.

What is shepherd’s pie?

Shepherd’s pie is a British and Irish-style dish of minced lamb in gravy topped with mashed potatoes and baked until browned. This American version brings Guinness and cheddar into the filling and topping for a particularly hearty take.

The method builds flavour by browning the lamb and thickening the gravy before adding the mash. A firm potato topping helps it sit over the filling rather than sinking into it.

Nutrition and macros by portion

The nutrition label shows one serving as written: 824 calories, 33g protein, 42g carbs, 58g fat.

The potatoes and peas provide most of the carbohydrates, while the lamb, butter, cheddar and olive oil contribute much of the protein and fat. Serve a moderate slice with green vegetables or salad to add freshness and balance the richness.

Why the lamb needs browning

Deep colour: Cook the lamb until it turns golden and most of its liquid has evaporated. This gives the filling a more savoury base than simply simmering the meat in the gravy.

Rendered fat: If the lamb releases a lot of fat, leave only 2 tablespoons in the pan as directed before adding the vegetables.

Building the Guinness gravy

Aromatic base: Give the onion, carrot and celery their full 5 minutes to soften, then cook the garlic, tomato paste and herbs for 1 minute until fragrant.

Thickened sauce: Stir in the flour before gradually adding the Guinness and stock. Keep stirring as it simmers for 5–8 minutes so the gravy thickens evenly.

Getting the mash right

Dry potatoes: Drain them thoroughly after boiling, then return them to the pan before mashing. Excess water can make the topping loose.

Firm texture: Fold in the milk, yolks, nutmeg and half the cheddar, aiming for a stiff mash rather than a creamy one. The topping needs to hold its shape when placed over the filling.

Assembling the layers

Even coverage: Place the mash in dollops, starting in the middle and working outwards until the lamb is covered. This helps distribute the topping without dragging it through the filling.

Baking tray: Put the skillet on a lined baking sheet before it goes into the oven, so any bubbling gravy is caught.

When it is ready

Look for golden potatoes and bubbling filling after 20–25 minutes at 220°C. Let the pie stand for 5 minutes before serving so the filling settles slightly.

What to serve alongside

The pie is substantial, so a simple green salad or steamed greens make a fresh contrast. For a more traditional, comforting plate, serve it with extra vegetables and spoon the gravy-rich filling alongside the mash.

Recipe notes & tips

• Cut the potatoes into evenly sized cubes so they cook at a similar rate.
• Drain the potatoes well before mashing to keep the topping stiff.
• Brown the lamb until golden before adding the chopped vegetables.
• Add the stout and stock gradually while stirring to help the gravy thicken smoothly.
• Use a baking sheet beneath the skillet to catch any filling that bubbles over.
• Rest the pie for 5 minutes before serving so it is easier to portion.

Variations

• Add sweetcorn: Replace some of the peas with frozen sweetcorn.
• Change the cheese: Use either sharp white or yellow cheddar, as in the recipe.
• Use Yukon Gold potatoes: Choose them instead of Russet potatoes for the mash.
• Adjust the herbs: Keep the thyme and rosemary amounts as written for a savoury, aromatic filling.

Common mistakes to avoid

• Loose mash: Drain the potatoes thoroughly and keep the finished mixture thick and stiff.
• Pale lamb: Cook it until golden and most of the liquid has evaporated before adding the vegetables.
• Greasy filling: Remove rendered lamb fat, leaving just 2 tablespoons in the pan.
• Lumpy gravy: Add the Guinness and stock gradually, stirring as you pour.
• Gaps in the topping: Place the mash in even dollops, starting at the centre and working outwards.
• Overlooked spillover: Bake the skillet on the prepared baking sheet to catch bubbling filling.

How to store

Cool leftovers and refrigerate them in a covered container for up to 3 days. Reheat portions until piping hot throughout; the topping may soften after storage.

Frequently asked questions