Slow-Cooked Lamb Shoulder with Wattleseed and Sweet Potato Mash

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

Tender Australian lamb shoulder slow-cooked with native wattleseed served alongside creamy mashed sweet potatoes for a comforting, earthy dish. This australian-inspired lamb ready in about 260 minutes pairs bone-in lamb shoulder, ground wattleseed, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 520 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: 20 min Cook: 240 min Serves 6 Australian cuisine 520 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 300°F. Rub 3 lbs lamb shoulder with 2 tbsp ground wattleseed, 4 minced garlic cloves, 2 tsp salt, and 1 tsp black pepper, then drizzle with 3 tbsp olive oil, massaging the spices into the meat.
  2. Step 2: Place the lamb shoulder in a roasting pan with 3 rosemary sprigs and pour 2 cups beef broth around it. Cover tightly with foil and roast in the oven for 4 hours until the meat is fall-apart tender.
  3. Step 3: Meanwhile, place 2 lbs peeled and cubed sweet potatoes in a large pot of salted water; bring to a boil and cook for 15-20 minutes until very tender.
  4. Step 4: Drain the sweet potatoes, then mash with 4 tbsp butter, 1/2 cup warm milk, and 1 tsp salt until smooth and creamy.
  5. Step 5: Remove the lamb from the oven and let rest 15 minutes before shredding. Serve the shredded lamb over the sweet potato mash with pan juices spooned on top.

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Frequently asked questions

How long does Slow-Cooked Lamb Shoulder with Wattleseed and Sweet Potato Mash take to make?

Total time is about 260 minutes (20 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-Cooked Lamb Shoulder with Wattleseed and Sweet Potato Mash?

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 bone-in lamb shoulder from drying out.

Can I substitute ingredients in Slow-Cooked Lamb Shoulder with Wattleseed and Sweet Potato Mash?

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-Cooked Lamb Shoulder with Wattleseed and Sweet Potato Mash 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-Cooked Lamb Shoulder with Wattleseed and Sweet Potato Mash?

Australian 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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