Mains
AIP easy roast lamb - boneless leg, low roast with onion, garlic, lemon, rosemary
Mains · serves 6 · 1-2-hours
Core AIP · Elimination phase compliant

Salting a boneless leg of lamb and letting it rest before it ever meets the oven takes patience up front, and after that the work is mostly done for you: onion, garlic, lemon and rosemary underneath, a low oven above, and only the very end asking for your attention, when the broiler finishes the top and you have to watch closely so nothing scorches. That is a fair trade for a roast that can feed a full table, protocol or not.
Lamb gives you a strong, usable dose of zinc, tied to gut-barrier repair and to an immune system reading a real threat correctly instead of overreacting to everything, and it is also a genuine source of vitamin B12, which supports the nervous system and the making of new red blood cells, something worth knowing since B12 often runs low for people managing a chronic condition. A well-raised animal, roasted slowly and carved with care, is already doing that work for you.
A whole leg of lamb used well, sliced thin and served with the pan juices spooned over, honors the animal it came from more than a smaller cut eaten without thought ever could. Let the table gather before the first plate goes out.
Ingredients
- 1 boneless leg of lamb roast (3 to 4 pounds)
- Coarse sea salt
- 1/4 cup olive oil
- 1 small onion, peeled and sliced thinly
- 4 garlic cloves, peeled and smashed
- 1 small lemon, sliced thinly
- 3 sprigs fresh rosemary
Method
Unroll the boneless leg of lamb and salt it well on all sides with the coarse sea salt. Let it rest at room temperature while the oven heats and the aromatics soften. This both seasons the meat and takes the chill off, so it roasts more evenly.
Heat the oven to a low roasting temperature, around 300 to 325 F. Pour the olive oil into a roasting pan and scatter in the sliced onion, smashed garlic, lemon slices and rosemary sprigs. Soften them in the oven for several minutes while you finish prepping the lamb, so they begin to release their flavor.
Lay the lamb over the bed of aromatics. Roast low and slow until it reaches your preferred doneness, checking with a meat thermometer rather than the clock. Pull it when the internal temperature is a few degrees below your target, since it climbs as it rests.
Raise the heat to a broil for the last few minutes to brown the top, watching closely so the herbs and lemon do not scorch.
Move the lamb to a board and let it rest, loosely tented, before slicing. Resting keeps the juices in the meat. Slice and spoon the pan aromatics over the top.
Instant Pot variation
For a braise rather than a roast, salt the lamb, then sear it on the saute setting in the olive oil. Add the onion, garlic, lemon and rosemary with a splash of water or broth, seal, and cook on high pressure until fork-tender (time depends on size, estimated and untested). This gives you a softer, pot-roast texture rather than a browned crust.
*Adapted from gutsybynature.com*
Nutrition
Estimated per serving (serves 6), calculated from the ingredients. Actual values vary with brands, sizes, and how much sauce or dressing you use.

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Further reading
Daniela Hess, MSEd, is a co-founder of Great Energy and an Autoimmune Educator and Functional Wellness Consultant who lives and thrives with Hashimoto’s. She is not a licensed medical provider.
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BraiseBroilImmune systemInstant PotSauteSearVitamin B12ZincEvery ingredient in this recipe is on the Core Autoimmune Protocol food list.
Download the Core Food List (PDF) Explore the food list