Easy Mexican Chicken Casserole 1 (10 ounce) can diced tomatoes with green chiles, such as Ro-tel 1 (16 ounce) can Ranch style beans 1 (16 ounce) can whole kernal corn 3 chicken breasts, grilled 1 1/2cups uncooked elbow macaroni, prepared as directed on package, drained 4 cups shredded cheddar cheese Preheat oven to 375 degrees. In saucepan, combine beans and Ro-tel, heat through. Stir in corn and cheese. Stir grilled chicken into bean mixture. Add to cooked macaroni, stir well. Spoon into 9x13 inch glass casserole dish. Bake for 20 minutes.