Step 1: Preheat your oven to 350°F (175°C).
Step 2: Line a 9x9 inch baking pan with parchment paper.
Step 3: Melt the butter over low heat.
Step 4: Stir in the coconut sugar and cocoa powder until well combined.
Step 5: Mix in the pure vanilla extract and fold in the lightly whipped eggs.
Step 6: In another bowl, whisk together the white whole-wheat flour and salt, then add to the wet ingredients.
Step 7: Fold in the chocolate chips and walnuts.
Step 8: Pour the batter into the prepared pan and bake for 20-25 minutes.
Step 9: Let cool for 10 minutes before lifting out and slicing.
