Beans have had the best PR over the last few years. Whether you’re on the waiting list for the Rancho Gordo heirloom-bean subscription service or have cooked Dense Bean Salad or Pizza Beans recently, you may be part of the legume-aissance. If not, welcome—let’s start by doing it the Texan way. While it may be sacrilege to suggest that Texans might be looking to eat less meat, it’s not wholly untrue. I fully support the hybrid Texatarian agenda, but there are all kinds of reasons to opt for a different protein source, whether financial or environmental or nutritional. Beans to the rescue: cheese-laced, Ro-Tel-studded, tortilla chip–shingled beans, to be exact. My take on the Texas classic King Ranch Casserole will feed an absolute army; it took my family…