Preheat the oven to 350 degrees F.
Line baking sheets with parchment paper.
Beat butter and peanut butter.
Add sugar.
Add vanilla and egg.
Add dry ingredients.
Roll into small balls and bake 8 mins.
Remove, wait 2 mins and gently press a Whopper into each one. Let cool.
Melt chocolate chips in micro safe pastry bag and dab two spots to attach candy eyes.
Pipe on spider legs.