Peanut Butter Pie

3/4 cup creamy peanut butter
1 cup confectioners sugar (may need to add more sugar to make it more crumbly)
3 sm boxes vanilla instant pudding mix
3 1/2 cups milk
1 lg. container cool whip

Mix together peanut butter and sugar until crumbly. Sprinkle some in bottom of baked pie shell. Combine pudding mix and milk. Pour into pie crust. Top with cool whip. Sprinkle some of the crumbly mixture on top of the cool whip. Chill and serve. This makes two pies.