⅓ cup sugar
⅓ cup oil
1 (15 oz.) can pumpkin
1 (15 oz.) yellow cake mix
3 tsp. pumpkin pie spice
½ cup walnuts or pecans (optional)
1 can vanilla frosting
3 oz. cream cheese, softened
Preheat oven to 350°. Grease and flour a 15x10x1 inch jelly roll pan. Combine sugar, oil, pumpkin and eggs. Beat on high for 1 minute. Add cake mix and pumpkin pie spice. Mix 2 minutes on high speed. Fold in nuts, if desired.
Pour into the pan and bake 25-35 minutes or until a toothpick inserted in the center comes out clean.
Combine the frosting and cream cheese until smooth. Frost cooled bars. Store in the refrigerator.