ooh coccinelle, i have two lovely one-pot recipes which would fit the bill for you - except they're both based around chicken!! we too seem to eat a lot of it, but i have to say we don't get fed up with either of these.
one is delia smiths chicken basque (you can google it to find out the recipe and i reckon you could substitute lean pork or turkey if you really didn't fancy chicken again).
the other includes chickpeas, onions, garlic, tomatoes and chillie sauce or flakes, along with chicken. again, i reckon you could substitute a different meat or even tuna.
i'm doing the delia one on friday for some friends as i can do most of it in advance and i won't be stuck in the kitchen while everyone else is chatting and drinking elsewhere!
if you have any simple, healthy desserts i'd be glad to hear about them, i'm a bit stuck.....