Fluffer Nutter Whoopie Pies

Cookie
2 Preheat oven to 350F.
3 Line a baking sheet with parchment paper.
4 In a medium bowl, whisk together flour, baking powder, baking soda and salt.
5 Set aside.
6 Cream the sugar, butter, and peanut butter together until light.
7 Beat in the eggs.
8 Add the buttermilk and mix until well blended.
9 Drop in 1/4 cup rounds on the cookie sheet keeping them 3 inches apart.
10 Bake 15 minutes, or until tops of cookies spring back when lightly pressed.
11 Cool completely before filling.
Filling
14 Beat first 4 ingredients together until fluffy.
15 Add cream as needed.
16 Divide in 8 parts.
17 Set peanut butter aside.
Assembly
20 Smear the flat bottom of one cookie with about 1 tablespoon of peanut butter.
21 Smear the flat bottom of  a second cookie with 1/8th of the filling.
22 Press the two cookies together.
23 Repeat with the remaining cookies.