Spray a 9x13" baking pan with non-stick cooking spray. Set aside.
Preheat the oven to 300 degrees F.
In a large mixing bowl, beat together butter and sugar.
Add in eggs one at a time, beating after adding each egg.
Stir in corn, chilies, and cheeses.
In a separate bowl, mix together flour, cornmeal, baking powder, and salt. Add in flour mixture with the wet ingredients and mix until all incorporated.
Pour cornbread batter into prepared pan.
Bake for 60-70 minutes or until toothpick inserted into the center of the cornbread comes out clean.
Notes
If you like more heat, add in some diced jalapenos!