Of course, this is a shortcut to the way most Amish make theirs with the vanilla pudding made from scratch. So, to make it more similar, I'd use real whipped cream as opposed to Cool Whip for the topping. Even 'Ready Whip' real whipped cream from the can will do, but use it right before serving as it doesn't tend to hold up for long, as does making it from scratch.
To make real whipped cream, simply use a cup of heavy cream, a tablespoon confectioner's sugar, and a few drops of vanilla extract. Whip with an electric mixer until stiff peaks form. Do not over beat or you'll end up with what looks like light yellow lumpy butter.
Amish Peanut Butter Pie
1 (4 oz.) instant vanilla pudding mix
Milk as directed on pkg.
1/2 c. crunchy peanut butter
1 c. confectioners' sugar
Whipped cream for topping
Pour mixed pudding over crumbs, top with remaining crumbs, except the 2 tbspns.
Top the pie with whipped cream, then garnish with the 2 tbspns, remaining crumbs.