I love a good quiche. I put the shredded cheese on the bottom of the pie crust when it is nearly cooled so it can melt and form a barrier against the custard mixture. I don't like soggy bottoms!
Super Secret Perfect Quiche Crust:
It sounds weird, but I swear this works. And it makes the most flavorful, flaky crust.
Instead of making a pie crust for quiche, get out 4 slices of bread.
I swear this works so stay with me....
Cut the crusts off the four slices of bread. Save the crusts.
Flatten the four slices of bread either by rolling or just pressing between your palms.
Arrange the slices of bread strategically around the bottom of a greased pie pan, tearing them and repositioning, to fill the whole bottom of the pan. You don't have to push them down or anything. As long as the pan's bottom is mostly covered, you're doing it right.
The bread crusts that you reserved are to be built up along the rim of the pie pan Just lazily laying in there. This will be the walls of the crust.
Pour in your fillings, and then your egg mixture.
Bake at 375 for about 20 minutes.
I don't know if I'll go back to regular pie crusts for quiche. This also works for pot pie. It tastes so good, and the crust flakes like real pie crust, but it is so much more flavorful! And easier, and less mess.