Heat the oven to 350 degrees and line a baking sheet with parchment paper.
In a mixing bowl, beat the softened butter with the granulated sugar and brown sugar until smooth.
Add the egg and vanilla extract to the butter mixture and stir until combined.
In a separate bowl, whisk together the flour, baking soda, and salt.
Slowly mix the dry ingredients into the wet ingredients until a dough forms.
Stir in the chocolate chips until evenly distributed.
Roll the dough out on a lightly floured surface to about 1/4 inch thick.
Use a bat-shaped cookie cutter to cut out shapes and place them on the baking sheet.
Bake for 10 to 12 minutes until the edges turn golden.
Let the cookies cool on the sheet for a few minutes before moving them to a rack.