This is my family's favorite quiche recipe. I tend to make it on Friday nights, when my vegetarian stepdaughter arrives home from the week at university with a large appetite for something home-cooked and satisfying. Serve with a bowl of soup or a salad, and you've got just that. What makes it so delicious in my opinion is the "secret ingredient" . . . mustard smeared on the bottom of the crust.I have noted one TBS in the recipe, but use as much as you need to provide an even coating. This quiche definitely tastes as good cold as warm from the oven, and makes a nice appetizer when cut in small portions, as well.