Heat a non stick pan, spray with oil & add mushroom and cook until just brown, add tomato & Spinach and cook until spinach is just wilted, set aside.
Whisk eggs & whites together season with salt & pepper. Heat a crepe pan and spray with oil, pour the eggs in, let the bottom set before flipping it over (if you find flipping it too difficult, you can finish the top in the oven).
Remove from pan once cooked and load your egg wrap with fav filings.