Preheat oven to 350.
In small bowl, combine eggs and whipping cream. Whip for about 30 seconds and set aside.
In oven proof iron skillet, cook chorizo over medium heat until almost done. Then, add onions and saute until onions begins to soften slightly.
Stir in chiles and spinach and cook until spinach begins to wilt.Stir in egg mixture and cheese.
Place pan directly in oven and bake for 25 minutes or until toothpick inserted in the center comes out clean.
Serve Chorizo Frittata warm with a side of fresh fruit.