Preheat oven to 190C/375F/Gas 5 and line a large, rimmed baking sheet with parchment paper or a baking mat. Set aside.

Cream the shortening and butter with granulated and brown sugars in a large mixing bowl. Mix in eggs and vanilla extract until well blended.

Add the flour, baking powder, baking soda, and salt to the bowl and mix to combine.

Fold in chocolate chips, chopped chocolate, and walnuts until thoroughly combined.

Use a large cookie dough scoop to make 24 balls of dough. Place 6 balls of dough on the prepared baking sheet with 1-2 inches in between each ball.

Flatten dough with the bottom of a glass.

Place in preheated oven and bake 10-12 minutes or until golden brown and cooked through. Remove from oven and cool slightly before serving. Enjoy!