Method:
Preheat oven to 400°F. Grease a 9-inch x 13-inch baking pan with 1 tablespoon of the butter; set aside.
In a large bowl, whisk together flour, cornmeal, baking powder, baking soda and garlic powder; set aside. In a medium bowl, whisk together milk, buttermilk, eggs and honey. Gently stir milk mixture into flour mixture until just combined. Stir in remaining 4 tablespoons butter, corn and chiles and transfer batter to prepared pan. Bake until top is golden and a toothpick inserted in the center comes out clean, 25 to 30 minutes. Set aside to let cool slightly then cut into squares and serve.