enchilada casserole recipe

Ingredients: 2 cups cooked, shredded chicken 2 cups enchilada sauce (store-bought or homemade) 1 cup sour cream 1 cup shredded cheddar cheese 1 cup shredded Monterey Jack cheese 1 can (15 oz) black beans, drained and rinsed 1 can (15 oz) corn kernels, drained 1/2 cup diced green chiles 1/4 cup chopped fresh cilantro (optional)