In college I dormed with three other girls my junior year. We didn’t do much cooking (since there was one kitchen for the whole floor and it never seemed to be without a sink full of dirty dishes, a food-spattered stovetop, and a sticky counter…and who wants to have to clean someone else’s kitchen mess before they can make dinner?), but when we did one of our favorite things to make was fajitas with refried beans. We didn’t make them often, not only because of the kitchen issues, but also because making fajitas was always a whole night affair.…