Preheat oven to 375°F
Line a large or several average-sized baking trays with parchment paper, and set aside.
In a large mixing bowl cream together the shortening, butter, granulated sugar, and brown sugar. Once mixed and creamy add in the eggs and vanilla extract and mix until ingredients are well blended.
In a small bowl combine flour, baking powder, baking soda, and salt. Mix together thoroughly. Slowly add combined ingredients into your large mixing bowl, mix to thoroughly combine.
Fold in chocolate chips, chopped chocolate chunks, and walnut until thoroughly combined.
Using a large cookie scoop will make approximately 24 balls of dough. Place each onto your parchment paper-lined baking tray. Allow 2 inches in between each cookie dough ball. Optional: Using a flat bottomed glass, gently flatten rounds into thick discs.
Place into a pre-heated oven and bake for 10-12 minutes or until golden brown and cooked through. Remove from oven and allow to cool, on the baking sheet, before removing cookies from baking sheet. Enjoy!