Mama's Whoopie Pies

Step 1
Preheat oven to 350 degrees F (175 degrees C).

Step 2
Whisk flour, cocoa powder, salt, baking powder, and baking soda in a bowl. Beat 1 cup butter and white sugar in a separate large bowl, with an electric mixer on medium speed, until mixture is creamy. Beat eggs and 2 teaspoons vanilla extract into butter mixture.

Step 3
Stir half the flour mixture into wet ingredients, followed by milk; stir remaining flour mixture into dough. Drop dough by tablespoonfuls onto baking sheets. For 25 whoopie pies, make 50 cookies.

Step 4
Bake cookies in the preheated oven until set and lightly browned, about 10 minutes. Let cool completely.

Step 5
Beat 3/4 cup butter with confectioners' sugar in a bowl, using an electric mixer; beat 2 teaspoons vanilla extract and marshmallow creme into filling. Spread at least 1 teaspoon filling on the bottom of a cookie and top with a second cookie. Repeat with remaining cookies and filling.