You must have got a big haggis. My Dad used to buy them from the butchers, and there was enough for two in them.
I presume it's one in a pudding shape?
The traditional way is to bring a pan of water to the boil, simmer the haggis till it's done, then take it out, cut it open and spoon out the contents, but it can be done in the oven according to this link.
It's already cooked, so you just need to heat it really, but it can take a while depending on the size. That site says 75 mins for a 1kg haggis.
they can have different consistancies, depending on the butcher, but to my mind the best ones are quite crumbly and spicy when you serve them. Goes great with mashed potato.
Hope you managed to get daughter's homework sorted Mollie.
Probably Alex and Jonas, would be my favourites to go. Just hope Nicola stays to the end.