A simple, but really delicious omelet, full of veggies, it satisfies the craving for a savory dish. You know how chicken soup surprises you because the simple mix of celery, onion and carrot is so delicious? This omelet does the same thing for me. A half an onion and half a red pepper makes a huge omelet. If you are having a hard time getting full, that's the low calorie, yummy option. If you're not so hungry, cut the onion and pepper to 1/4 each, or if you decide to add some of the following vegetables. Other vegetable options are as follows: sauteed mushrooms, jalapeno pepper ( if you want it spicier), drained green chilies, drained rotel tomatoes, or advocado on top. It's pretty versatile, obviously, as omelets are. The thing you can't leave out if you're doing the Flat Belly Diet is the black olives. Another option for the Flat belly diet is to use 5 olives and a couple of slices(1/8 cup) of advocado. If you don't like the black olives, substitute a full 1/4 cup of advocado. I would put the advocado on top, not in the omelet. The calories are going to be about the same. Another option for making this omelet that is really fast is to add your raw, (not sauteed) vegetables after step 2. I like it just as well that way. The vegetables are kind of like a pico de gallo in your omelet because they are cruchy and raw when you do that, but I like them that way just as well. Then the omelet takes less than 5 minutes to cook.