This Mexican Cornbread Casserole is an easy and delicious one-dish meal made with ground beef, Rotel, corn, cheese, and Jiffy cornbread mix. It’s perfect for feeding a crowd or for busy weeknights. This Mexican Cornbread Casserole is a mouthwatering, comforting, and versatile dish that combines the rich flavors of cornbread with zesty spices, tangy ingredients, and gooey melted cheese!