Triple Chocolate Chunk Cookies

Ingredients:

• 1 cup (2 sticks) unsalted butter, softened

• 1 cup packed brown sugar

• ½ cup granulated sugar

• 2 large eggs

• 1 ½ tsp vanilla extract

• 2 ¼ cups all-purpose flour

• ½ cup unsweetened cocoa powder (preferably Dutch-processed)

• 1 tsp baking soda

• ½ tsp salt

• 1 cup dark chocolate chunks

• 1 cup milk chocolate chunks

• 1 cup white chocolate chunks