Brown and drain a pound of hamburger.  stir in one big or two regular sized cans of refried beans.  let it simmer for at least 20 mn.  make sure you stir it every once in a while or it will burn to the bottom of the pan and piss you right off.  the longer it simmers, the better it is.  a few minutes before it's done, toss in some finely chopped onion.  (apparently you want the onion to still be crunchy.  i could care less, but whatever.)  serve on tortillas with all the fixin's. 

this keeps really well in the fridge.  score.

addendum: this is actually a recipe from my mother-in-law.  my husband says i can't call them "Emily's" burritos.  i say that since i barfed them up, undigested, while i was in labor, i can call them anything i want.