Step 1: Prepare the Crust - Preheat your oven to 350°F (175°C). In a mixing bowl, combine 1 cup of flour, 1/2 cup of vegetable shortening, 1 tablespoon of sugar, 1/8 teaspoon of baking powder, and 1/2 teaspoon of salt until crumbly in texture. Gradually add 1/4 cup of cold water until a dough forms, then roll it out into an unbaked 9-inch pie shell and set aside.
Step 2: Mix Dry Ingredients - In another bowl, whisk together 1/2 cup of flour, 1/2 cup of pure cane sugar, and 1/2 cup of pure cane dark brown sugar until well combined.
Step 3: Combine Wet Ingredients - In yet another bowl, beat together 2 eggs and stir in 1 cup of melted butter that has been cooled along with 1 teaspoon of vanilla extract.
Step 4: Assemble Filling - Gradually mix the dry ingredients into the wet mixture until just combined, then fold in 1 cup of chocolate chips and 1/2 cup of chopped walnuts gently.
Step 5: Fill and Bake - Pour the gooey filling into your prepared pie shell evenly before placing it in preheated oven. Bake for about 30-35 minutes or until golden brown on top but still slightly jiggly in the center.
Step 6: Cool and Serve - Once baked, remove from oven and let it cool slightly before slicing into generous portions. Serve warm with whipped cream or ice cream.