Nigella's meatballs? She says use pork and beef mince mixed, but they're lovely with just beef/lamb mince.
Lasagne's easy if you can do cheese sauce. The rest is putting stuff on top of other stuff.
For a meatloaf, you just combine the mince with some chopped onion, herbs, breadcrumbs, bit of Worcestershire sauce, stick it in a loaf tin, cover with foil, and bung it in the oven for an hour and a quarter or so. You can add chopped chilli if you like it spicy, or throw in some chopped fried mushrooms to bulk it out a bit.
Home made burgers are a doddle, too - combine the mince with some chopped onion, mix up with your hands, form burger shapes and grill. Some people like to use breadcrumbs to make the mince go further, and egg to bind, but I don't when I make them for dd.
I agree - moussaka! A family favourite! We used fried aubergine and potato slices with a bechamel sauce.
Also, chilli con carne, you can buy jars of the stuff and you simply brown the minced meat and add - easy option but very, very tasty! Try the discovery brand. My DH loves it in wraps with a bit of sour cream.