Instructions

for the cookies:

1. Stir together the peanut butter, sugar egg and vanilla extract.
2. Scoop by 1 1/2 Tbs rounds and place 2" apart on a lined baking pan, sightly flatten with the palm of your hand and bake for 8-9 minutes.
3. Let cool on the pan 5 minutes, then transfer to a wire rack and cool completely.

for the filling:

1. In a mixing bowl combine the chocolate, milk and butter and melt in the microwave until smooth, about 30-45 seconds.
2. Stir in the powdered sugar, mixing until smooth.
3. Spoon or pipe the filling mixture on to the flat side of 6 cookies, placing a second cookie on top to create a sandwich.
4. Serve immediately or store cookies in an airtight container in the refrigerator for up to 5 days.