Place chiles on a broiler pan and broil until the skin begins to blacken and blister. Place in a small bowl and cover for about 5 minutes. Reduce oven to 375°.
While chiles are steaming, in a medium bowl scramble eggs, milk and spices.
Remove stem, seeds and skin from peppers. Stuff each with 1 ounce of Cotija cheese and place in a pie plate.
Pour egg mixture over the peppers, top with cheese.
Bake at 375° until done, 15-20 minutes. Serve with salsa.
Notes
This recipe can easily be doubled to feed a larger crowd. Use a 9 x 13" pan and allow a bit longer to bake.