Walnut Filling

Taken from About.com Gluten Free Cooking

• 6 ounces of finely ground walnuts
• 1/4 cup milk
• 3/4 cup cane sugar
• 1 large egg
• 4 tablespoons butter (preferably salted)

Put nuts in a food process and pulse for about 15 seconds or until nuts are finely ground and the texture of sawdust.

Place the ground nuts, milk, sugar, egg and butter in a heavy saucepan. Cook the mixture over medium high heat until it begins to bubble. Stir constantly to avoid scorching. Lower heat to medium low and continue to cook and stir for about 3 more minutes or until the mixture is thick and bubbling. Remove from heat and set aside to cool.