Shepherd’s Pie with Ground Lamb and Root Vegetables

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A traditional shepherd’s pie layered with savory ground lamb, sautéed root vegetables, and creamy mashed potato topping baked until golden. This british-inspired lamb ready in about 65 minutes layers ground lamb, olive oil, medium, diced yellow onion into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 480 calories and feeds 6, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 50 min Serves 6 British cuisine 480 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Boil 2 lbs peeled and cubed potatoes in salted water for 15-18 minutes until fork-tender. Drain and mash with 4 tbsp unsalted butter and 1/2 cup whole milk until creamy. Set aside.
  2. Step 2: While potatoes cook, heat 2 tbsp olive oil in a large skillet over medium-high heat. Add 1 medium diced yellow onion, 2 diced carrots, and 2 diced celery stalks. Sauté for 6-7 minutes until vegetables soften.
  3. Step 3: Add 1 lb ground lamb to the skillet and cook for 5-6 minutes, breaking up meat until browned and cooked through.
  4. Step 4: Stir in 3 minced garlic cloves and 2 tbsp tomato paste. Cook for 2 minutes until fragrant.
  5. Step 5: Pour in 1 cup beef broth, add 1 cup frozen peas and 1 tsp fresh thyme leaves. Season with 1 1/2 tsp salt and 1 tsp black pepper. Simmer for 5 minutes until liquid reduces slightly.
  6. Step 6: Transfer lamb mixture to a 9x9-inch baking dish. Spread the mashed potatoes evenly over the top. Sprinkle 1/4 cup grated Parmesan cheese over the mashed potatoes if using.
  7. Step 7: Bake uncovered for 20-25 minutes until the top is golden and edges bubble. Let rest 5 minutes before serving.

Frequently asked questions

How long does Shepherd’s Pie with Ground Lamb and Root Vegetables take to make?

Total time is about 65 minutes (15 min prep + 50 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover Shepherd’s Pie with Ground Lamb and Root Vegetables?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in Shepherd’s Pie with Ground Lamb and Root Vegetables?

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 Shepherd’s Pie with Ground Lamb and Root Vegetables for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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 Shepherd’s Pie with Ground Lamb and Root Vegetables?

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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