Prepare a 9x9 square pan (or a tart pan if you totally lost yours like me) with coconut oil, rubbing on the sides and on the bottom.
Use a food processor to pulse the walnuts and pumpkin seeds until fine.
Add cocoa powder, goji berries, cacao nibs, hemp seeds, and salt and pulse until incorporated.
Add dates and blitz until dates are basically obliterated and are incorporated into the mixture.
Press mixture into the prepared pan. Use the bottom of a glass to press it in evenly. Pop the pan into the freezer for about 10 minutes while you prepare the topping.
Melt chocolate chips with coconut oil in the microwave for about 30 seconds. Stir until smooth.
Pour over the chilled brownie base and use a spoon to spread evenly.
Garnish with walnuts, goji berries, cacao nibs, and hemp seeds and a sprinkle of salt. Chill again the the freezer for 20 minutes, then cut into 16 pieces. Store in the fridge for up to a week.