This made a wonderful and filling brunch. I think it would be equally good for a light dinner. After cooking the potato until almost done, the asparagus was tossed in the pan. Mixed the egg whites with egg substitute and remaining ingredients which were then poured over the potato mixture. In place of the chopped onion, I used 3 green onions sliced. I did the flip the frittata onto a plate and then slide it back into the pan instead of putting it in the oven. As I said, this made a wonderful brunch.