Ultimate Cookie Copycat

Step 1 -In a large bowl, add the butter, the dark brown sugar, the granulated sugar, and the salt and using an electric handheld mixer, beat until light and fluffy, about 8 minutes.

Step 2 -Add the eggs, 1 at a time, to the butter mixture and beat well after each addition.

Step 3 -In a separate bowl, add the flour, the baking powder, and the baking soda and whisk to combine.

Step 4 -Gradually add the dry ingredients mixture to the butter mixture, while beating, until it is just combined into a dough.

Step 5 -Add the walnuts, the semisweet chocolate chips, and the dark chocolate chips to the dough and beat on low speed until some of the walnuts are broken into pieces and the nuts and chocolate chips are well-distributed throughout the dough.

Step 6 -Divide the dough into 12 equal pieces.

Step 7 -Loosely shape the dough pieces into balls.

Step 8 -Cover and refrigerate the dough balls for at least 6 hours and up to overnight.

Step 9 -Preheat the oven to 350 degrees F.

Step 10 -Line two baking sheets with parchment paper.

Step 11 -Arrange the dough balls about 2 inches apart on the prepared baking sheets.

Step 12 -Bake the cookies until they reach an internal temperature of 180 degrees F and become golden-brown, about 10-12 minutes. You may need to bake them in batches.

Step 13 -Allow the cookies to cool on the baking pans for 10 minutes.

Step 14 -Transfer the cookie to a wire rack to cool completely.

Step 15 -Serve.