Onion Tart

Directions

1. 1
   Heat butter in heavy saucepan and stir in thinly sliced onions. Cook, stirring constantly, over medium heat until onions are almost transparent.
2. 2
   Remove from heat and cool thoroughly.
3. 3
   Stir in mushrooms.
4. 4
   Stir in sour cream, mixed with 4 tablespoons of sherry and three well-beaten eggs.
5. 5
   Season to taste with salt, pepper, nutmeg, thyme and cloves.
6. 6
   Line a 9-inch pie plate with flaky piecrust.
7. 7
   Fill shell with onion mixture and top with bacon squares.
8. 8
   Bake at 350° until filling is firm and crust lightly browned.
9. 9
   Serve hot.
10. 10
    Serves 6 to 8.