Preheat oven to 350 degrees.
Melt the butter in a large skillet. Add the chopped onion & celery. Cook until translucent. Add in the ground chorizo sausage. Cook until the chorizo is browned - about 6-9 minutes. Turn off the heat. Stir in the package of cornbread stuffing, chicken broth, & green chiles. Fold in the chopped cilantro, making sure you reserve 2 tablespoons for garnish after the stuffing is baked.
Spray a large baking dish (3 quarts or larger) with non-stick cooking spray. Spread in the stuffing mix. Cover with aluminum foil. Bake in the preheated oven for 30 minutes.
Once the stuffing is done, uncover & sprinkle on the remaining 2 tablespoons of chopped cilantro. Serve.