Shred all of the cheese and add to a large mixing bowl.
Add all other dry ingredients (cornmeal, salt, and sugar) to the same bowl and mix well.
Add 2 cups of water to a large pot and add chiles. Bring to a rolling boil.
Slowly add the water and chile mixture to the dry ingredients, a little at a time, constantly stirring. Once it is all mixed, it should have an oatmeal-like texture.
Heat the oil in a cast iron skillet to 375 degrees. Using a spoon or spatula, spoon a portion into the oil and form it into patties. The mixture will yield eight patties.
Once the edges begin to brown, flip over and cook for a couple more minutes until crispy.
Remove the patties to a wire rack to let excess grease drip off.
Serve warm.
Video
Notes
Cheese Options: Switch up the cheddar with Monterey Jack or Pepper Jack for an extra kick.
Chiles: Hatch green chiles are ideal, but you can use canned green chiles in a pinch.
Make it Ahead: The batter can be prepared a few hours in advance and stored in the refrigerator until ready to fry.