Slow-Roasted Lamb Shoulder with Mint and Rosemary

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender lamb shoulder slow-roasted with fresh mint and rosemary, creating a fragrant and succulent British-inspired roast. This british-inspired lamb ready in about 255 minutes pairs pounds lamb shoulder, fresh rosemary sprigs, chopped fresh mint leaves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 6, 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: 15 min Cook: 240 min Serves 6 British cuisine 480 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat your oven to 300°F (150°C). In a small bowl, combine 3 tbsp olive oil, 4 minced garlic cloves, 1/4 cup chopped fresh mint leaves, 3 sprigs of finely chopped fresh rosemary, 2 tsp salt, 1 tsp black pepper, and 1 tsp lemon zest to create a fragrant herb rub.
  2. Step 2: Pat dry the 3-pound lamb shoulder and rub the herb mixture evenly over the entire surface, massaging it into the meat.
  3. Step 3: Place the lamb shoulder in a roasting pan and pour 1/2 cup water into the pan to keep the meat moist. Cover loosely with foil.
  4. Step 4: Roast in the preheated oven for 4 hours, basting every hour with pan juices, until the lamb is tender and easily pulls apart with a fork.
  5. Step 5: Remove the foil in the last 30 minutes of roasting to allow the outside to brown and develop a crisp crust. Rest for 15 minutes before slicing and serving.

Frequently asked questions

How long does Slow-Roasted Lamb Shoulder with Mint and Rosemary take to make?

Total time is about 255 minutes (15 min prep + 240 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 Slow-Roasted Lamb Shoulder with Mint and Rosemary?

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 pounds lamb shoulder from drying out.

Can I substitute ingredients in Slow-Roasted Lamb Shoulder with Mint and Rosemary?

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 Slow-Roasted Lamb Shoulder with Mint and Rosemary 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 Slow-Roasted Lamb Shoulder with Mint and Rosemary?

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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