Christmas roasts in a slow cooker?

[SheSellsSeashellsByTheSeashore]

I am for the first time making a xmas roast myself, only at DH's house rather than my own. Since I don't want to be rushing around to DH's house at daft o clock in the morning to be starting off the meat (we are sleeping here due to the fact that he has no bedrooms as yet) I was going to par cook the meat the night before. But Dh thinks this will poison us?

So I think I might buy a slow cooker. Can you roast meat in them and does it still taste as nice? Could I start it off the night before? Will it be safe in DH's house overnight or will I burn the house down? Can you get ones that you can fit two joints into? We are going to be having Pork and Chicken.

TIA.

I would cook all the meat the day before at your house, then slice it and warm through the next day in gravy.

We have done this in the past when we havnt had room for everything in the oven.

I would do what WSWHF suggests, will be a lot easier.

Not a good idea putting two different joints of meat in one slow cooker.