01 - 
                Preheat oven to 375°F (190°C) and lightly grease a 9x13 inch baking dish.
              
              
              
                02 - 
                In a large bowl, combine shredded chicken, cooked rice, black beans, diced tomatoes with green chilies, corn, and half of the enchilada sauce. Mix until evenly incorporated.
              
              
              
                03 - 
                Spread half of the chicken and rice mixture evenly into the prepared baking dish.
              
              
              
                04 - 
                Sprinkle half of the cheddar and Monterey Jack cheese over the layer.
              
              
              
                05 - 
                Evenly distribute the remaining chicken and rice mixture on top.
              
              
              
                06 - 
                Pour the remaining enchilada sauce over the casserole, then top with the remaining cheeses, black olives, and green onions.
              
              
              
                07 - 
                Bake for 20 to 25 minutes, or until the cheese is fully melted and the casserole is bubbling around the edges.
              
              
              
                08 - 
                Remove from oven and allow to cool for 5 minutes to set.
              
              
              
                09 - 
                Sprinkle chopped fresh cilantro across the surface just before serving.