This Mexican food innovation takes the traditional chiles rellenos and transforms them into a comforting casserole. Roasted poblano peppers are stuffed with a mixture of cheese, corn, and black beans, then layered in a baking dish with a rich tomato sauce. The casserole is topped with more cheese and baked until bubbly and golden. It's a great make-ahead dish for gatherings or a satisfying weeknight dinner.
