Topping: Whipped topping Pecans; chopped Recipe by: Sweet Potato Festival, Vardamon, Mississippi, 1994 Melt margarine, add flour, nuts and sugar. Press into 9 X 13 inch baking p Bake 15 minutes at 375 degrees or until lightly browned. Combine filling ingredients, mix well and spread over cooled first layer. Top with a layer whipped topping and sprinkle with chopped pecans.