Preheat oven to 350 degrees. Spray and 9 x 13 pan with non-stick spray and set aside.
In a large bowl, add eggs and ham. Whisk together until well combined.
Add in cheese, ham, and green onion along with desired amount of salt and pepper. Stir to combine.
Pour into prepared 9 x 13 pan. Bake at 350 degrees fro 40-45 minutes until a knife inserted in the center come out clean. Let cool for ten minutes and then serves. Serves 10-12.