Roasted Lamb Loin with Rosemary and Garlic
Juicy roasted lamb loin infused with fresh rosemary and garlic, roasted to medium-rare perfection for a succulent main course. This Mediterranean-inspired lamb recipe, ready in about 45 minutes, pairs lamb loin, fresh rosemary, 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 4, 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
- 2 pounds lamb loin
- 2 tbsp, chopped fresh rosemary
- 5, thinly sliced garlic cloves
- 3 tbsp olive oil
- 1 1/2 tsp sea salt
- 1 tsp black pepper
- 1 tsp lemon zest
Know when the lamb is done: thermometers under $100 → Best Instant-Read Thermometers for 2026: Fast, Accurate Picks Under $100
Affiliate disclosure: AislePrompt may earn a commission on qualifying purchases made through Amazon links, at no additional cost to you. See our policy →
Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Preheat oven to 400°F. Pat dry 2 pounds lamb loin and make small incisions all over to insert 5 thinly sliced garlic cloves evenly.
- Step 2: In a small bowl, mix 3 tbsp olive oil, 2 tbsp chopped fresh rosemary, 1 1/2 tsp sea salt, 1 tsp black pepper, and 1 tsp lemon zest.
- Step 3: Rub the herb and oil mixture all over the lamb, coating it thoroughly. Place lamb on a roasting rack in a baking tray.
- Step 4: Roast in the preheated oven for 25-30 minutes for medium-rare doneness, or until an internal temperature of 135°F is reached. Let rest 10 minutes before slicing thinly to serve.









