Whoopie Pies:
1 – 12 ounce package mini chocolate chips
2 Tablespoons milk
3/4 cup butter room temperature
1/4 cup creamy peanut butter
1 1/2 cups sugar
1 teaspoon baking soda
1 teaspoon baking powder
1/4 teaspoon salt
2 eggs
1/2 cup milk
1 teaspoon vanilla
1/2 cup unsweetened cocoa powder
3 cups flour

Filling:
1 cup room temperature butter
1 cup creamy peanut butter
1 cup marshmallow creme
2 cups powdered sugar
2 Tablespoons milk