Slow-Roasted Mediterranean Lamb with Sumac and Thyme

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Tender lamb shoulder slow-roasted with fragrant sumac, fresh thyme, and garlic, delivering a deeply savory and aromatic Mediterranean experience. This mediterranean-inspired lamb (mediterranean) ready in about 195 minutes pairs pounds bone-in lamb shoulder, tablespoons olive oil, teaspoons ground sumac for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 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. 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: 180 min Serves 6 Mediterranean cuisine 450 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat your oven to 300°F (150°C). Pat dry 3 pounds of bone-in lamb shoulder and rub it all over with 3 tablespoons olive oil, 2 teaspoons ground sumac, 2 tablespoons fresh thyme leaves, 4 minced garlic cloves, 1 1/2 teaspoons sea salt, and 1 teaspoon black pepper until evenly coated.
  2. Step 2: Place the seasoned lamb into a roasting pan and pour 1/2 cup water around it to keep the meat moist. Roast uncovered in the preheated oven for 3 hours, basting every hour with the pan juices until the lamb is fork-tender and the surface is deeply browned.
  3. Step 3: Remove the lamb from the oven, drizzle 2 tablespoons lemon juice over the top, and let it rest for 15 minutes before slicing thinly against the grain to serve.

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Frequently asked questions

How long does Slow-Roasted Mediterranean Lamb with Sumac and Thyme take to make?

Total time is about 195 minutes (15 min prep + 180 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 Mediterranean Lamb with Sumac and Thyme?

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 bone-in lamb shoulder from drying out.

Can I substitute ingredients in Slow-Roasted Mediterranean Lamb with Sumac and Thyme?

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 Mediterranean Lamb with Sumac and Thyme 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 Mediterranean Lamb with Sumac and Thyme?

Mediterranean 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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