In a stockpot, cover fowl with water. Add bay leaves and rosemary, bring to a boil, and then simmer until tender. Remove fowl from pot and set aside to cool. Reserve stock in pan. Bone fowl, saving the skin and bones to add back to stock later. Place meat in each of 4 (2-cup) serving bowls. Add celery, carrots, and onions to stock and simmer until tender. Strain, reserving the stock, and divide into bowls with fowl. Add peas, mushrooms and peanuts to bowl with fowl and vegetables.
Preheat oven to 350 degrees F.
Divide sauce evenly among bowls. Cover pies with pastry crust; brush crust with beaten egg and then lightly sprinkle with nutmeg. Prick crust with fork to vent. Bake until crust is golden brown.
In a saucepan, stir together cream, flour, seasonings, and mustard until smooth. Add 3 cups hot stock and simmer until a medium thickness. Add peanut butter and wine, stirring to blend. Add salt and white pepper, to taste.
Combine flour, baking powder, and salt in a mixing bowl. Cut in shortening with a pastry blender until mixture resembles coarse meal. Sprinkle ice water evenly over surface. Stir with a fork until all dry ingredients are moistened. Divide dough into 4 pieces. On a lightly floured surface, roll dough out to fit over bowl tops.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.