01 - Preheat oven to 350°F. Line baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, and salt until well blended.
03 - In a large bowl, beat softened butter with granulated and brown sugars until light and fluffy, about 2-3 minutes.
04 - Beat in egg and vanilla extract until fully incorporated into the butter mixture.
05 - Gradually add dry ingredients to the wet mixture, mixing on low speed until just combined. Do not overmix.
06 - Gently fold chopped chocolate sandwich cookies and white chocolate chips into the dough using a rubber spatula.
07 - Scoop tablespoon-sized balls of dough onto prepared baking sheets, spacing about 2 inches apart to allow for spreading.
08 - Bake for 10-12 minutes or until edges are lightly golden and centers appear set.
09 - Let cookies rest on baking sheets for 5 minutes, then transfer to wire rack to cool completely.