Spinach and Feta Oven Omelet Breakfast Sandwich

1.Preheat oven to 350 degrees. 2.In a large bowl, whisk together eggs and milk until well combined. 3.Stir in the spinach and feta cheese. Salt and pepper to taste **Special note: Please make sure your spinach is very well drained. I usually will thaw overnight in the fridge and then squeeze about 4-5 times through a mesh strainer all the excess water out of the spinach. This is a little bit of a process but worth it. 4.Pour egg mixture into a 7 x 11 baking dish sprayed with cooking spray. *Special note: I have use a 9x13 baking pan before and it works fine. It will give you thinner egg pieces. The baking time, in my experiences, has been around the same no matter if I used a 7 x 11 or 9 x 13 baking pan. 5.Bake in 350 degree oven for 45 – 50 minutes, or until the center is set. 6.Cut into 10 pieces and serve on Thomas Bagel Thins or eat plain. You can make these ahead of time and just store in the refrigerator all week. Warm up in oven or microwave.