Light and Creamy Pumpkin Pie

1 c canned pumpkin
1/2 c colk milk
1 (6 serving) pkg..vanilla instant pudding and pie filling
1 t pumpkin pie spices
1 8oz container cool whip
1 graham cracker ready crust pie crust

Combine pumpkin, milk, pie filling, milk and pumpkin pie spice in small bixer bowl. Beat at lowest spped of electric mixer until well blended, about 1 minute..Fold in 2 1/2 cups of cool whip. Spoon into crust. Freeze until firm, about 4 hours.. Top servings with remaining cool whip..