Pre heat the oven to 350 degrees. Spray a 9 x 13 inch casserole (or two pie plates) with cooking spray. Combine eggs, cottage cheese, chiles, and 3 ½ cups of cheese in a large bowl and whisk to blend. Add in the flour, baking powder and salt and stir to combine. Pour mixture into prepared casserole/pie plates. Bake for 40 minutes or until top is golden brown. Remove from the oven and spread the tomato sauce on top and sprinkle with remaining ½ cup cheese. Return to oven for 5 - 8 minutes or until cheese melts. Remove from oven and let cool for 10 - 15 minutes and then slice and serve!