Prepare Your Peanut Butter Cups: Place the mini Reese’s cups in the freezer for about 20 minutes.

Mix the Wet Ingredients: Cream together softened butter, brown sugar, and granulated sugar until light and fluffy. Add peanut butter, egg, and vanilla extract.

Combine the Dry Ingredients: Whisk together flour, baking soda, baking powder, and salt. Gradually add to the wet ingredients and mix until just combined.

Shape the Cookie Dough: Form the dough into tablespoon-sized balls, roll in granulated sugar, and place on a baking sheet.

Bake the Cookies: Bake cookie dough balls for 8-11 minutes, or until lightly golden around the edges.

Press in the Reese’s Cups: Press a chilled Reese’s cup into the center of each cookie after baking.

Add Spider Legs and Eyes: Melt chocolate chips and pipe chocolate legs onto each cookie. Secure candy eyeballs on top.