Combine margarine, fruit sweetener, and mashed banana. Beat in egg, pumpkin & vanilla.
Combine dry ingredients and stir into pumpkin mixture. Add raisins and nuts. Spread into a 9 x 13-inch pan which has been sprayed with a non-stick coating.
Bake 20-25 minutes at 325 degrees, or until firm in the center.
Combine juice concentrate, 3 Tbsp fruit sweetener, orange rind and 1 tsp vanilla. Spread glaze over warm bars.