Onion and Bacon Tart

8 slices Bacon, Chopped
5 cups onions, sliced
1 large egg
1/2 cup sour cream
1/2 tsp salt
1/2 tsp pepper
1/8 tsp nutmeg
1 13.8 ounce tube refrig. pizza dough or your own home made pizza dough
1/4 teaspoon caraway seeds

Preheat oven to 375 degrees. F.  Saute bacon in heavy large skillet over medium-high heat until crisp.  Remove to paper towels to drain.  Remove all but 1 tablespoon bacon drippings from skillet.  Add onions and saute over medium heat until onions are very tender, about 20 minutes.  Cool.

Whisk egg, sour cream, salt, pepper, and nutmeg in large bowl to blend.  Stir in cooled onion mixture and most of bacon.

Roll pizza dough out on lightly floured surface to 13 x 10 inch rectangle or into a circle to fit pizza pan.  Transfer dough to baking sheet.  Spread onion mixture over dough, leaving 1/2 inch plain border around edges.  Add remaining bacon and sprinkle with carasay seeds.

Bake tart until onion custard is set and crust is golden brown around edges and brown on bottom, about 25 minutes.