In my classes I'm always saying, "if you've got cooked beans in the fridge, you always have food". Here's just one example. I don't remember what kind of beans they are but they look like Rio Zapes, a rich, dense bean with an appealing sweetness and a thick broth. They could just as deliciously be pintos or some other bean less exotic. The point is, here's a good lunch made from scrounging around in the fridge.
1 primavera tortilla, heated in the cast-iron pan
a scoop of beans
a little of whatever cheese you have
your favorite hot sauce (this is the addictive green stuff from Guatemala called Salsa Brava Picamas)