Peanut Butter Marshmallow Pie

Came across a good looking peanut butter marshmallow at King Arthur's web site and couldn't resist trying to make one. Check out their pie at this web site: http://www.kingarthurflour.com/recipes/peanut-butter-marshmallow-pie-recipe
So here is my attempt to make a peanut butter pie! 
Note to self: next time I will sprinkle not spread melted chocolate on top of pie, as a decoration. It was hard to cut into and I think it would of looked prettier.
 
2 cups heavy cream
1/3 cup plain yogurt
1 teaspoon Wilton meringue powder
1 1/2 tablespoons powdered sugar
1 1/2 tablespoon corn starch
1 tablespoon sugar
1 1/4 cup marshmallow creme
1 cup creamy peanut butter
1/3 cup bittersweet chocolate chips melted
1 graham cracker pie shell

To prepare the filling: Place the cream and yogurt in a mixing bowl and blend with beaters until the cream leaves a trail in the cream.
Blend together in a small bowl: the meringue powder, powdered sugar, corn starch and sugar.
Add this slowly to the cream yogurt mixture.
Mix in the marshmallow creme and peanut butter. Beat until well combined, thick and fluffy.
To assemble: Take the melted chocolate and spread on bottom of pie shell.
Then add the cream mixture in, spreading to fill into the pie shell.
Refrigerate add least 2 hours. Cut and serve. Can put a spoonful of whip cream on top of each serving.
Serves 8.