Ingredients
Equipment
Method
- Remove lamb from the fridge 1 hour before roasting to ensure even cooking.
- Preheat oven to 240°C/475°F (220°C fan) with the rack in the center.
- Mix rosemary, garlic, and olive oil into a thick paste.
- Place lamb in a roasting pan, rub with herb mixture, then season with salt and pepper. Add halved garlic heads and rosemary under the lamb.
- Roast at high heat for 20 minutes to brown the surface.
- Reduce oven to 200°C/400°F (180°C fan) and roast for about 1 hour, checking at 45 minutes. Aim for 53°C/127°F for medium-rare.
- Transfer lamb to a platter, tent loosely with foil, and rest for 20–60 minutes.
- Remove rosemary sprigs. Heat pan drippings, whisk in flour, then gradually add broth. Mash roasted garlic to release flavor. Simmer until thickened and strain.
Notes
Use a thermometer for perfect doneness and always rest the lamb before slicing. For gluten-free gravy, replace flour with cornstarch slurry added at the end. Keep the roasting pan snug to prevent drippings from burning.
