In a large mixing bowl, combine masa harina, melted butter, chicken broth, and green chiles. Stir until smooth.

In a medium saucepan over medium heat, combine the cooked chicken with the green enchilada sauce and chopped cilantro. Simmer for about 5-7 minutes.

Grease a 9x13-inch baking dish. Spread half of the masa mixture across the bottom of the dish. Spoon the chicken mixture on top, then sprinkle with cheese.

Spread the remaining masa mixture over the cheese layer.

Bake in a preheated oven at 375°F for approximately 35-40 minutes until golden brown.

Let it cool for about 10 minutes before serving.