From an old New York Times clipping
1 8-oz. package cream cheese
1 cup sweet butter (2 sticks)
2 cups flour
2 cups finely chopped mushrooms (about 1/3 lb.)
1 small onion, minced
1/3 lb. ground veal or beef
1 tsp. dried dill, black pepper
2 Tbs. tomato paste
2 Tbs. dry sherry
1/3 c. sour cream
Combine cream cheese and butter and blend well. Add flour. Form into 2 balls, chill for 2 hours.
Sauté onion, veal, dill, tomato paste, sherry. Simmer for 10 min. or until dry. Add mushrooms and cook. Remove from heat and stir in sour cream. Chill. Roll 1-inch balls of dough into circles, fill and fold over. Bake on an ungreased sheet at 350° for 23 min or so. Makes 24.
This is the right amount of filling for 24 plus a little for tasting.