Step 1

Preheat oven to 350°F. Line baking sheet(s) with parchment paper, set aside

Step 2

In medium bowl whisk together flour, cornstarch, baking soda and salt. Set aside.

Step 3

In the bowl of your stand mixer fitted with the paddle attachment mix the butter, brown sugar, and granulated sugar on medium speed for 2 minutes until light and fluffy.

Step 4

And add in egg and vanilla and mix for 1 minute until smooth, scraping the sides of the bowl as necessary.

Step 5

Turn the mixer to low and add in flour mixture until dough just comes together.

Step 6

Stir in candy until evenly incorporated.

Step 7

Using a medium (2- tablespoon) cookie scoop, drop the dough onto the prepared baking sheet 2- inches apart.

Step 8

Bake for 8-9 minutes until edges are golden. Make sure not to over-bake.

Step 9

Remove from the oven and allow the cookies to cool on the baking sheet for 3 minutes, and then transfer to wire rack to finish cooling.