I'm a super busy person and I'm always running out the door, here and there, so I rely on leftovers, eggs, cereal, quick cooking rice/couscous/grains, tinned beans, quick cooking veggies, salad stuff, pasta, and anything in my slow cooker!! I <3 my slow cooker- a great meal and its already done when I get home and I'm starving.
I know a lot of people around here make big batches of stuff and freeze it, but I've only just gotten a proper freezer again- after having one of those silly- teeny- tiny ones for ages- so I'm not in that habit again.