Preheat oven to 425 degrees F (220 degrees C). Line a jelly-roll pan or large pizza pan with prepared dough, making sure dough extends up sides of pan.
Saute onion in a skillet until translucent and pour cooked onion into a large mixing bowl. Place bacon in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, chop and add to onion; mix well.
Stir in sour cream. Beat eggs enough to break up yolks, then mix in to pie mixture. Add flour to thicken mixture (onions will create a lot of water), then add salt. Mix well and pour mixture into prepared pan. Sprinkle top with caraway seed.
Bake in preheated oven for about 1 hour, or until onions start to turn golden brown on top.
