I used fresh mushrooms in this recipe that I sauteed with the onion, red bell pepper and a little fresh minced garlic before adding it to the other ingredients. I did add a little Frank's Hot Sauce to the casserole when I added in the spices. Everyone loved this baked egg omelette, especially me. I made a whole Brinner night and this went GREAT with home fries. I think I would cut the cheese in half next time, I think I could get away with that.