In a separate baking dish (8 x 8 pyrex), use remaining 1tsp of olive oil to coat. Shake and measure out the 2 cups of egg beaters and pour into pie pan. Sprinkle Parmesan cheese and mix. Add spinach and mushrooms to this and spread out evenly.
Bake at 425 for 15-25 minutes. Let stand for 5 minutes before serving.