Cooking for friends Sunday

Hi,

I'm cooking for friends this Sunday at their place (they have a baby so it's easier for us to go there). I don't want to have them have to host + cook + take care of a 6-mo old so I volunteered to take care of dinner.

Does anyone have any ideas/recipes that I could prep at home in a tray, have in keep in a try for about 4-6 hours and be able to pop in the oven at their place? I'm cooking for 6 including myself.

bon appetit