Whoopie Pies Made With Boxed Cake Mix Recipe

Preheat oven to 400 Line cookie sheet with parchment paper In mixing bowl beat all ingredients on medium low speed until well combined Drop by 2 tablespoonfuls onto cookie sheets, 2 inches apart Bake 8-10 minutes, until puffed and toothpick inserted in center comes out clean Cool on rack until completely cool In mixing bowl, add butter, marshmallow, powdered sugar, cream cheese, vanilla, and salt Beat until smooth Put 1/2 of pies, flat side up, on a cool baking sheet Mound about 1 1/2 tbls. filling in the center of each Top with remaining pies, rounded side up, and press gently so filling spreads Keep chilled until ready to serve