Along with chunks of rotisserie chicken, this hearty quiche is chock full of nutty gruyere cheese and a little savory onion. If you are looking for a substantial lunch or a light dinner that wont leave you feeling guilty, this is the one-pan meal for you. We chose to cook this quiche in a springform pan. Its easy to use and since you can remove the sides after it has cooked, makes the quiche easy to cut into sliced once baked. You can also use a regular pie plate or even a cake panjust choose one that is 9 inches in diameter. Baking the pie crust prior to filling it is essential. It creates the flaky and crispy pastry base that you want in a quiche. If you dont bake it ahead of time then the egg custard will combine with the crust and create a very soggy bottom. This quiche is a great way to use up leftover rotisserie chicken. You can also use leftover baked chicken or any combination of chicken breast and thigh meat. Just shred it up and whisk it in