Leftover Halloween Candy Cookies is an easy recipe idea for extra Reese's Peanut Butter Cups, Kit Kats, Butterfingers, or M&M's that you have.
In a mixing bowl, cream together butter, sugar, and brown sugar.
Add in egg and vanilla. Beat on low until combined.
In a separate bowl, stir together the dry ingredients: flour, baking soda, and salt. Slowly incorporate the dry ingredients into the butter/sugar mixture.
Once combined, add in the broken up candy pieces. Turn on the mixer to incorporate and break up the pieces slightly.
Cover and chill for 2 hours.
Preheat oven to 350°F. Line cookie sheets with parchment paper, then scoop out cookies.
Bake for about 10-12 minutes, until edges are golden brown.
Let cool about 5 minutes and then remove to rack to cool completely.