01 -
Preheat oven to 350°F (175°C) and lightly grease a baking dish.
02 -
Arrange half of the green chiles evenly across the bottom of the baking dish.
03 -
Sprinkle half of the shredded Monterey Jack or Pepper Jack and cheddar cheeses over the chiles.
04 -
Add the remaining green chiles evenly over the cheese layer, then top with the rest of the shredded cheeses.
05 -
In a bowl, whisk together eggs, whole milk, heavy cream, all-purpose flour, baking powder, salt, black pepper, garlic powder, and onion powder until smooth and well combined.
06 -
Evenly pour the egg mixture over the layered chiles and cheese in the baking dish.
07 -
Bake uncovered for 40 to 45 minutes, until the casserole is puffed, golden on top, and set in the center.
08 -
Allow the dish to rest for 5 to 10 minutes before slicing and serving.