Oven-Roasted Lamb with Garlic and Rosemary
A traditional Australian family favorite featuring tender lamb leg roasted with fresh garlic and rosemary for a fragrant, savory main dish. This australian-inspired lamb ready in about 125 minutes pairs bone-in lamb leg, sliced garlic cloves, fresh rosemary sprigs for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 620 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.
Ingredients
- 4 lbs bone-in lamb leg
- 6, sliced garlic cloves
- 4 fresh rosemary sprigs
- 3 tbsp olive oil
- 2 tsp sea salt
- 1 tsp black pepper
- 1.5 lbs, quartered potatoes
- 4 medium, cut into 2-inch pieces carrots
Instructions
- Step 1: Preheat oven to 375°F (190°C). Using a sharp knife, make small slits all over the 4 lbs bone-in lamb leg and insert 6 sliced garlic cloves and 4 fresh rosemary sprigs into the slits.
- Step 2: Rub 3 tbsp olive oil evenly over the lamb and season generously with 2 tsp sea salt and 1 tsp black pepper.
- Step 3: Place the lamb in a roasting pan and surround it with 1.5 lbs quartered potatoes and 4 medium carrots cut into 2-inch pieces.
- Step 4: Roast in the preheated oven for 1 hour 30 minutes to 1 hour 45 minutes, basting occasionally with pan juices, until the internal temperature reaches 135°F (57°C) for medium-rare.
- Step 5: Remove from oven and let the lamb rest for 15 minutes before carving to allow juices to redistribute.
Frequently asked questions
How long does Oven-Roasted Lamb with Garlic and Rosemary take to make?
Total time is about 125 minutes (20 min prep + 105 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 Oven-Roasted Lamb with Garlic 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 bone-in lamb leg from drying out.
Can I substitute ingredients in Oven-Roasted Lamb with Garlic 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 Oven-Roasted Lamb with Garlic 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 Oven-Roasted Lamb with Garlic and Rosemary?
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.
Related recipes
Oven-Roasted Lamb with Rosemary and Garlic
Classic Shepherd's Pie with Lamb and Root Vegetables
Slow-Roasted Lamb with Rosemary and Bush Tomato Relish
Slow-Roasted Lamb Shoulder with Mint and Garlic
Pan-Fried Lamb Chops with Rosemary Garlic Butter
Pan-Fried Lamb Rissoles with Roasted Sweet Potato Salad
Equipment for this recipe
Top-rated tools to make this recipe successfully.
