My family absolutely loves quiche, but I didn't make it frequently due to the hydrogenated oils from the pie crust and the extra calories from the heavy cream. It took me several years to perfect this recipe to make it low fat while maintaining the richness and flavor. The idea of using potato for the crust came from Elizabeth's O'Brien Quiche recipe (thank you Elizabeth!) and this was the final substitution I needed for honing this recipe. Because I cram so much into this deep dish quiche, it is very filling. I like to serve sliced melon (water- or cantelope) for dessert.