Savory Upside-Down Pie - cooking recipe

Ingredients

7 1/2 oz. pkg. frozen puff pastry
1 1/2 lb. ground beef
1 tsp. salt
1/2 tsp. pepper
1 large onion, chopped
3 egg yolks
1 c. mushrooms
4 oz. bacon slices
1/2 c. crumbled Blue cheese
1 Tbsp. chopped sorrel and chervil

Preparation

Thaw pastry.
Mix ground beef, salt, pepper and onion; bind with egg yolks.
Wash and quarter mushrooms.
Cover the bottom of an 8-inch loose bottomed cake pan with the bacon.
Arrange the cheese, herbs and mushroom quarters on top.
Cover the meat mixture, pressing it down firmly and smoothly on the top.