Wales Lamb and Mint Shepherd’s Pie

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A hearty shepherd’s pie made with ground lamb, fresh mint, and creamy mashed potatoes for a Welsh-inspired comfort meal. This british-inspired lamb ready in about 65 minutes pairs ground lamb, medium, diced onion, medium, diced carrots for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart.

Prep: 20 min Cook: 45 min Serves 4 British cuisine 480 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Boil 2 large peeled and cubed potatoes in salted water for 15 minutes until tender. Drain and mash with 3 tbsp unsalted butter, 1/3 cup whole milk, salt, and pepper until creamy.
  2. Step 2: While potatoes cook, heat 1 tbsp olive oil in a large skillet over medium-high heat. Add 1 diced medium onion, 2 diced medium carrots, and 2 minced garlic cloves. Sauté for 5 minutes until softened.
  3. Step 3: Add 1 lb ground lamb to the skillet and cook for 7 minutes, breaking up meat, until browned.
  4. Step 4: Stir in 2 tbsp tomato paste and cook for 2 minutes. Pour in 1 cup beef broth and simmer for 10 minutes until sauce thickens.
  5. Step 5: Mix in 1/2 cup frozen peas and 2 tbsp chopped fresh mint leaves. Season with salt and black pepper to taste.
  6. Step 6: Transfer lamb mixture to a baking dish and spread evenly. Top with mashed potatoes and smooth the surface.
  7. Step 7: Bake in preheated oven for 20 minutes until the top is golden and edges bubbly. Let rest 5 minutes before serving.

Frequently asked questions

How long does Wales Lamb and Mint Shepherd’s Pie take to make?

Total time is about 65 minutes (20 min prep + 45 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Wales Lamb and Mint Shepherd’s Pie?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep ground lamb from drying out.

Can I substitute ingredients in Wales Lamb and Mint Shepherd’s Pie?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Wales Lamb and Mint Shepherd’s Pie for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Wales Lamb and Mint Shepherd’s Pie?

British lamb like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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