| Preheat oven to 325. Line 2 cookie sheets with heavy-duty foil. Spray cooking oil over the top of the foil. In a heavy saucepan, combine corn syrup, sugar, and butter. Cook over medium heat, stirring constantly, until mixture comes to a boil. Remove from heat; stir in flour and walnuts until well blended. Add vanilla and mix well. Drop by teaspoonful, 3 inches apart, onto foil-lined cookie sheets. Bake 8 to 10 minutes. Cool thoroughly on foil; peel off wafer. Dip half of the wafer into melted chocolate. | 
