Preheat your oven to 375 degrees F. Line your baking sheet with Silpat mats, parchment paper, or spray with non stick spray. Set aside.
Cream the shortening, butter, granulated sugar, and brown sugar in a large mixing bowl. Add the eggs, mixing after each. Mix in the vanilla.
½ cup shortening, ½ cup unsalted butter, 1 cup granulated sugar, 1 cup light brown sugar, packed, 2 large eggs, 1 ½ teaspoon vanilla extract
Add in the flour, baking powder, baking soda, and the salt. Mix to combine.
3 cups all purpose flour, 1 teaspoon baking powder, 1 teaspoon baking soda, ½ teaspoon salt
Hand stir in the chocolate chips, chocolate chunks, and the chopped walnuts until evenly distributed. At this point, you can chill the dough for an hour or proceed and bake.
1 cup semi sweet chocolate chips, 1 cup dark chocolate chunk chips, 1 cup chopped walnuts
Use a ⅛ cup scoop and make 24 balls of dough in rounded heaps. Place 6 balls of dough on a sheet so they have plenty of room in between. Don't crowd. Flatten the top of the cookie ball with the bottom of a glass, or the back of a spoon. Just a little, especially if the dough is cold from refrigeration.
Place tray in the preheated oven and bake for 10 to 12 minutes, or until golden brown. Be careful to not overcook. Remove from the oven and cool for 3 minutes before transferring to the cooling rack with a spatula.