Step 1: Preheat the Oven
Preheat your oven to 350 degrees Fahrenheit. Spray a 9 x 13 inch dish with nonstick cooking spray.
Step 2: Prepare the Chilies
Cut the chilies open by slicing from top to bottom and remove any stems. Layer half of the cut chilies in the bottom of the prepared casserole dish.
Step 3: Add the Cheese
Sprinkle half of the Monterey Jack and cheddar cheese over the layer of chilies. Layer with the second half of the cut chilies and the remaining cheese.
Step 4: Make the Egg Mixture
In a medium bowl, whisk together the eggs, milk, flour, baking powder, salt, and black pepper. Pour the egg mixture over the cheese and green chilies.
Step 5: Bake
Bake for 35-40 minutes or until lightly browned on the edges and set in the middle.
Step 6: Cool and Serve
Cool for 7-10 minutes before slicing. Top with Pico de Gallo, chopped cilantro, and sour cream if desired.
