Preheat oven to 325 degrees F, line 9 x 5 loaf pan with unbleached parchment paper and spray with cooking spray. Set aside.
In a medium pot, add coconut milk and heat up until hot but not boiling (you can also use a microwave). Remove from heat, add cacao powder and whisk until no lumps are left. Set aside.
In a large mixing bowl, add eggs, maple syrup, baking powder, baking soda and salt. Whisk very well until no lumps are left.
Transfer chocolate mixture to a bowl with egg mixture and whisk well. Add flour, stir gently until no more white flour patches left and let batter sit for 3 minutes.
Add 1/2 cup chocolate chips and pistachios; give a few more gentle stirs to combine. Batter will be runny.
Pour batter into prepared loaf pan and sprinkle with remaining 1/4 cup of chocolate chips. Bake on the middle rack for 60 minutes or until the toothpick inserted in the middle comes out clean.
Remove chocolate bread from the oven and transfer to a cooling rack to cool off for 10 minutes. Holding onto the flaps of parchment paper remove from a loaf pan and let it cool off completely before slicing. Cut with serrated bread knife.
Notes
Store: Store covered in a cool dry place for up to 3 days, after that in the fridge.
Freeze: Freeze in an airtight container for up to 3 months.
Coconut milk: Make sure not to use coconut milk from a carton that you would drink. I have not tried recipe with light canned coconut milk, only full fat - I assume you can but bread will be less moist.