This is such a knockout-- super impressive to serve guests, none of whom will have any idea how easy it was. Seriously, this comes together in a snap. It's hearty, delicious, and gorgeous. Oh-- and it's like winning a free trip to Italy. What more could you ask?
1. Preheat oven to 375 degrees. Spray or grease bottom and sides of an 8- or 9-inch springform pan. Roll 2/3 of dough into a circle and press onto bottom and up sides of pan. (I can give you a great pie dough recipe if you like, or use a convenience package.)
2. Fill crust with remaining ingredients, except egg, layering them in order. Roll out final 1/3 of dough into an 8-inch circle, and place atop fillings, pinching seams with bottom crust to seal. Make vent holes with a fork, then brush with beaten egg.
3. Bake 50 minutes. Let rest 15 minutes, then remove from pan. Slice into wedges. This is also great at room temperature or cold. What a different, delightful sandwich!