Instructions

Preheat the oven to 375 degrees F (190 degrees C). Spray a 6-cup muffin tin with baking spray with flour (such as Pam(R)).
Heat a skillet over medium heat. Add chorizo and onion; pan fry about 10 minutes.
Beat eggs in a bowl with a splash of water. Add shredded pepper Jack cheese and cilantro to egg mixture.
Pour egg mixture into prepared muffin tin, filling each cup half-full. Spoon chorizo mixture evenly into cups.
Bake in the preheated oven until a toothpick inserted in the center of a muffin comes out clean, 20 to 30 minutes.