Slow-Roasted Lamb with Rosemary and Wattleseed Rub

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender lamb shoulder slow-roasted with a fragrant rub of rosemary, garlic, and native wattleseed, delivering a uniquely Australian flavor profile. This australian-inspired lamb ready in about 275 minutes pairs bone-in lamb shoulder, finely chopped fresh rosemary, minced garlic cloves 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. 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: 255 min Serves 6 Australian cuisine 480 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 300°F. In a small bowl, combine 2 tbsp finely chopped fresh rosemary, 4 minced garlic cloves, 1 tbsp ground roasted wattleseed, 2 tsp sea salt, 1 tsp black pepper, 3 tbsp olive oil, and 1 tsp lemon zest to form a fragrant rub.
  2. Step 2: Pat the 3-lb bone-in lamb shoulder dry with paper towels. Rub the seasoning mixture all over the lamb, massaging it into the surface evenly.
  3. Step 3: Place the lamb in a roasting pan and pour 1 cup water into the pan to keep the meat moist during cooking.
  4. Step 4: Cover the pan tightly with foil and roast in the preheated oven for 3.5 to 4 hours until the meat is fork-tender and easily pulls away from the bone.
  5. Step 5: Remove the foil and increase oven temperature to 425°F. Roast uncovered for an additional 15 minutes to develop a golden crust. Let rest 15 minutes before slicing and serving.

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Frequently asked questions

How long does Slow-Roasted Lamb with Rosemary and Wattleseed Rub take to make?

Total time is about 275 minutes (20 min prep + 255 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 with Rosemary and Wattleseed Rub?

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-Roasted Lamb with Rosemary and Wattleseed Rub?

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 with Rosemary and Wattleseed Rub 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 with Rosemary and Wattleseed Rub?

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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