1 pkg. Duncan Hines moist deluxe yellow cake mix
1 can (16 oz.) solid pack pumpkin
1 can (12 oz.) evaporated milk
3 eggs
1 1/2 c. sugar
4 tsp. pumpkin pie spice
1/2 tsp. salt
1 c. chopped pecans
1 c. butter, melted
Whipped topping