Preheat the oven to 180°C.
Poke the sweet potatoes with a skewer, then put them onto a baking tray.
Bake them for about 45 minutes, until soft (if you can easily push through a skewer, they're done).
Scoop out the flesh and put the skin back into the oven (facing upwards) for 5 minutes until crispy.
Meanwhile, in a large mixing bowl, mash the flesh with the chipotle sauce, then fold in the spring onion and meat pieces. Season to taste and add more chilli if it’s not spicy enough for you.
Mix in most of the cheese, then spoon the mixture into the potato skins. Scatter the remaining cheese on top and bake for about another 10 minutes, until the cheese has melted and the filling has warmed through.
Serve hot or luke-warm.