I’ve combined sauteed swiss chard and onions, Gruyere, and eggs before, in fritatta form. I don’t love swiss chard as a side dish, but folded into eggs (or mashed potatoes) I do like its flavor a lot (it is similar to spinach). I used the same ingredients for the quiche, but the flaky pie crust makes the already-yummy filling into a real treat of a summer dinner.
I used frozen Oronoque Orchards deep dish pie crusts, which are pretty decent but include a small amount of partially hydrogenated vegetable oils, including cottonseed. Not that pie crust is a healthy thing to eat anyway, but I do try to avoid cottonseed oil in particular. I noticed whole wheat pie crusts in Mrs. Green’s the last time I was there, so I will have to check the ingredients on those brands as a possible alternative.
I love this quiche cold, straight from the fridge. I baked two of them, and then froze one for an easy meal another day.