Chocolate Whoopie Pie Cookies

1 cup soft butter
1 cup sour cream
2 cups granulated sugar
2 eggs
2 teaspoons vanilla extract
2 ½ cups all-purpose flour
⅔ cup dark cocoa
1 teaspoon baking soda
1 teaspoon baking powder
1 teaspoon salt

Cream butter, sour cream and sugar with an electric mixer on medium high for 2+ minutes or until fluffy. Hand stir in eggs and vanilla extract; don’t overmix. Add dry ingredients all at once and mix until fully incorporated. Add 2+ Tablespoons more flour for high elevation. Scoop out 40+ 1 ½  ” mounds of dough. Dough will be sticky.  Bake at 375 degrees for 12+ minutes. Do not underbake.  Cookies should dome slightly and be cake-like. Let cool completely. Frost the bottom side of ½ of the cookies with Marshmallow Creme Frosting. Let set. Share!

Marshmallow Creme Frosting
½ cup soft butter
2 cups powdered sugar
1 teaspoon vanilla extract
¼ cup whipping cream
Dash of salt
14 oz. marshmallow creme (Fluff)

Beat butter, powdered sugar, vanilla, whipping cream until smooth.  Mix an additional 2-3 minutes on high speed.  Fold in marshmallow creme.