Don’t suffer through a bowl of cold leftover mashed potatoes—transform yesterday’s side dish into airy, crispy, hot mashed ...

Have leftover potatoes and don’t know what to do with it?... 2 tablespoons vegetable oil1/4 cup buttermilk2 large eggs2 1/2 cups leftover mashed potatoes3 tablespoons chopped scallions1 cup shredded ...