"Though Fain, a seventh-generation Texan, now lives in New York City, she spends a lot of time re-creating the vibrant Tex-Mex food of her youth. Think that doesn't include casseroles? Take a gander at these cheesy chicken enchiladas. "To give a kick to my sour cream sauce," the author says, "I add serrano chiles and tomatillos." Recipe courtesy of Lisa Fain, author of The Homesick Texan Cookbook..."