Step 1: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Step 2: In a large mixing bowl, cream together the softened unsalted butter, granulated sugar, and brown sugar using an electric mixer on medium speed until light and fluffy, about 2-3 minutes. Incorporate the egg and vanilla extract until fully combined.

Step 3: In a separate bowl, whisk together the all-purpose flour, baking soda, baking powder, and salt. Gradually fold this dry mixture into the wet mixture until just combined.

Step 4: Gently fold in the crushed chocolate sandwich cookies, white chocolate chips, and semi-sweet chocolate chips until evenly distributed throughout the dough.

Step 5: Using a tablespoon or cookie scoop, portion out the dough onto the prepared baking sheet, leaving about 2 inches of space between each mound.

Step 6: Bake for 10-12 minutes until the edges turn light golden brown and the centers remain soft.

Step 7: Let them cool on the baking sheet for about 5 minutes before transferring to a wire rack to cool completely.