Preheat oven to 425F.
In a large bowl whisk together flour, baking powder and salt.
Stir in the corn, chiles and 1/2 cup parmesan cheese.
Add in the milk and mayonnaise stirring until combined.
Spray muffin pans and spoon the mixture in.
Sprinkle with remaining parmesan cheese.
If using mini muffin pans bake for approx. 8-10 minutes. If using normal or jumbo muffin pans bake for approx. 20 minutes depending on your oven.