Ingredients
Equipment
Method
Make the Filling
- Preheat your oven to 375°F (190°C) and begin browning the ground lamb in a large oven-safe skillet over medium-high heat, then drain any excess fat.
- Add the diced onion, carrots, and celery to the skillet, cooking them until softened, about 5-7 minutes, before stirring in the minced garlic and cooking for another minute until fragrant.
- Stir in the tomato paste and cook for 2 minutes, then pour in the beef broth and Worcestershire sauce, bringing the mixture to a simmer.
- Season the filling with dried thyme, salt, and black pepper, and let it simmer for 10-15 minutes, or until the sauce slightly thickens.
- Remove the skillet from the heat and stir in the frozen peas.
Prepare the Topping
- While the filling simmers, boil the peeled and quartered potatoes in a large pot of salted water until they are very tender when pierced with a fork, which takes about 15-20 minutes.
- Drain the cooked potatoes thoroughly, then return them to the empty pot and mash them until smooth.
- Mix in the warm milk, butter, salt, and pepper into the mashed potatoes until well combined and creamy.
Assemble and Bake
- Spread the mashed potato topping evenly over the meat filling in the skillet, using a fork to create ridges on the surface.
- If desired, sprinkle shredded cheddar cheese over the mashed potatoes, then bake the Shepherd's Pie for 25-30 minutes, or until the topping is golden brown and the filling is bubbling.
Notes
For an extra golden crust, you can briefly place the pie under the broiler for the last few minutes of baking. You can also prepare the filling and topping ahead of time and assemble just before baking.
