Smoked Boneless Lamb
Herb crust, mild smoke, pink all the way through.
A boneless leg, a garlic and rosemary paste, and an afternoon that ends in a 400°F sear.
- Total
- About 3 hrplus overnight if you season ahead
- Cut
- Boneless leg roast, 4–6 lb
- Pellets
- A mild blend — oak, hickory, maple, cherry
- Grill
- Weber Searwood 600
Done whenPull at 145°F, or your preferred doneness, and rest 3 minutes minimum.
SmokeBoost 180°FRoast 250°FSear 400°FRest 15 min
The cook
Prepare the lamb
- Take the roast out of the fridge 30–45 minutes before it goes on.
- Pat it dry.
- If it came in netting, leave the netting on through seasoning and cooking. It comes off after.
Make the herb paste
- Mix the minced garlic, rosemary, thyme, olive oil, salt, pepper, lemon juice and zest.
How you know: You want a thick paste, not a marinade.
Season
- Rub the paste over the whole roast.
- Best case: season the night before and refrigerate uncovered.
- Same day: let it sit at room temperature 30 minutes.
Set up the Searwood
- Fill the hopper.
- Install the grease tray and drip pan.
- Clean the grates.
- Connect the food probe.
- Preheat on SmokeBoost at 180°F.
Smoke
- Lay the roast fat-side up.
- Push the probe into the centre, away from fat.
How you know: This stage is for flavour and colour, not for cooking it through.
Raise to roasting heat
- After 60–90 minutes, set the grill to 250°F.
- Keep cooking and keep watching the internal temperature.
- Target 140–145°F.
Sear
- When you are close to target, pull the roast and bring the grill to 400°F.
- Put it back on and sear 2–3 minutes a side.
How you know: Optional, but this is where the brown crust comes from.
Check the temperature
- Probe the centre of the roast.
- Pull at 145°F, or your preferred doneness.
How you know: USDA calls for 145°F followed by a 3-minute rest.
Rest
- Let it sit. It keeps cooking and it keeps the juice.
Slice
- Take the netting off.
- Slice across the grain, ¼ to ½ inch thick.
- Finish with a little flaky salt.
Worth knowing
- Mild pellets only. Heavy smoke buries lamb.
- Let the probe decide when it is done, not the clock.
- Extra lemon zest or fresh herbs at the end lift the whole thing.
- Garlic and rosemary yogurt sauce, roasted vegetables, or a plain green salad.
Printable sheet
The whole recipe on one page, sized to print and take out to the grill.