This was my first shot at making a frittata. This recipe turned very well. Changes / modifications I did: I cooked the onion over high heat first so they got a bit caramelized and then turned down the heat before putting in the egg. I also cut it down to two potatoes. Four potatoes would have been WAY too much. I added about a tablespoon of heavy cream to the eggs while beating them. I used about a cup of shredded cheese. What I may try next time: A few dashes of hot sauce in the eggs to get your attention. Use bacon instead of ham for a stronger taste. Substitute green onions / scallions to give it a bit more color. After baking in the oven, put in under the broiler for a minute or so to brown the cheese a bit.