This is such a creamy and flavorful quiche. So easy to throw together. We enjoyed it for brunch this morning. I used kalamata olives, as that is what I had on hand. I seasoned it with a little salt, fresh ground pepper and dried thyme. It came out perfect. The recipe did not specify what kind of cheese to use. I used cheddar, though feta would complement the flavors in this quiche wonderfully. Thank you for another great recipe, this is indeed Dee-licious!!!