• Preheat oven to 350º.
• In a small mixing bowl, whisk flour, baking soda, and salt together.
• In a larger bowl, beat butter, brown sugar, and white sugar together until well blended.
• Add peanut butter and beat again, then add egg and vanilla, and beat until well incorporated. Stir in flour mixture.
• Divide dough into 18 portions and roll into balls. Roll each ball in granulated sugar.
• Place on a cookie sheet with at least 2 inches between each cookie, and bake in center of oven for 10 minutes.
• Remove, and press an indentation into each cookie for the peanut butter cup to sit.

To Decorate:

• When cookies are cool, place chocolate chips and 1 tablespoon of butter together in a microwave safe bowl, and melt, using ten second intervals in the microwave until completely melted.
• Stir together well, and transfer to a condiment squeeze bottle or decorating bag. In a pinch, you can put it it a small zip lock bag, and cut a very small hole in the corner to squeeze your chocolate out.
• Unwrap your peanut butter cups, and place one, top down, on each cookie, using a dollop of chocolate as glue between cookie and candy.
• Pipe chocolate from Reese’s cup to the side of the cookie, making 8 “legs”. Use a dollop of chocolate to fasten two eyes on to each. Let chocolate cool to harden, and you’re done!