To prepare a pastry for pumpkin pie in walnut crust baked goods recipe, preheat oven to 375 degrees F (190 degrees C). Lightly grease two 9-inch pie pans with nonstick cooking spray. Set aside. In medium bowl, combine flour, salt, baking powder, cinnamon, and nutmeg. Gradually add the wet ingredients to the dry ingredients, mixing well after each addition. Pour the mixture into the pie shells and bake for 20 to 25 minutes or until golden brown. Remove from oven and allow to cool before serving.