Pre heat oven to 200C
Heat the olive oil and the butter for the caramelised onions on a low/medium heat before adding the onions.
Stir occasionally and cook for around 30 minutes – add more oil/butter if need be.
Bring some salted water up to the boil in a large saucepan. Place the potato into the pot and return to the boil.
Reduce the heat to a simmer and cook until potato begins to soften. Drain Well.
Add the butter (or coconut cream if you prefer) and mash until smooth consistency. Season.
Line the base of a baking dish with the shredded pulled lamb and caramelised onions
Pour 1 cup of broth into dish. Spread onto the lamb & onions.
Place the mashed sweet potato on top of the lamb.
Place in the oven for 20 minutes, or until potato is browned.
Remove from the heat and serve.