Preheat the oven to 350 degrees Fahrenheit.
Beat the butter and peanut butter together in a large bowl until it is well combined.
Add in the sugars and cream for about 2 minutes or until the mixture has lightened.
Stir in the egg and vanilla extract.
Add in the dry ingredients (flour, baking soda, baking powder, and salt) and stir into the mixture until well combined.
Roll the cookie dough into 2 inch sized balls (you'll want about 18 balls total).
Place cookie dough onto a cookie sheet lined with parchment paper or a silicone liner, about 2 inches apart from one another. I usually fit 12 per half cookie sheet.
Bake for 7-8 minutes until the cookies just start to crack. They'll finish baking as they cool on the pan.
While the cookies cool for a few minutes, add 7 candy corn pieces to the top of the cookie, into the cookie to make "feathers".
Transfer the cookies to a cooling rack to cool for another 10 minutes.
Place an unwrapped peanut butter cup on top of the center of each cookie.
Let the peanut butter cups sit for about 5 to 10 minutes, as the chocolate warms and will melt a bit. Then top each peanut butter cup with two eyes, then a chocolate beak, and a chocolate gobbler.
Let the cookies cool completely.