Used garden zucchini, cherry tomatoes, onions, peppers, chives, fresh basil, swiss chard, sharp cheddar. Next time may add bacon. As long as you cook a lot of moisture out of your veggies you'll be fine. I halved the egg mixture and baked in my 9 in pan and it baked perfectly (stuck to pan slightly) but was a little thinner than I'd like. May have to tweak the pan size or egg mix to make it a little thicker. Served half (for two people) with side of hash browns and it was a little light so maybe add a side of fruit next time (whole pan would have been too much but half wasn't quite enough). Really good though and easily customizable. Good use for garden veggies.