A rack of lamb with special sauce/marinade sits on a bed of layered mashed potato and caramalised onions with marinade
I put aluminium foil over the ends of the rack but i think everyone knows that. Also good to put foil over the rack of lamb for the first 15 mins so the sauce/ marinade doesn't crisp too soon. If the marinade is not too strong for you I add a little red/white wine and drizzle lightly over the meal