Black bean brownies (Toddlers and beyond)

Name: Black bean brownies (Toddlers and beyond)
Prep time: 15 min
Cook time: 25 h 20 min
Total time: 25 h 35 min
Cuisine: American
Ingredients: 170 g dried black beans; 600 g filtered water; 60 g virgin coconut oil; 100 g dark chocolate (70% cocoa); 3 eggs; 30 g raw cacao powder; 2 tsp natural vanilla extract; 80 g coconut sugar; 1 tsp gluten free baking powder; 50 g walnuts; raw cacao nibs