Preheat oven to 350 degrees and spray an 8x8 pan with baking spray.
Melt 1/2 cup of chocolate chips in microwave on half power for 30 seconds.
Stir, then microwave on half power again for 30 more seconds.
To a food processor add the black beans, eggs and vegetable oil until completely smooth, about 90 seconds.
Add in the melted chocolate, sugar and vanilla extract to the food processor until smooth, another 30 seconds.
Sift together the cocoa powder, flour, baking soda and baking powder and add to the food processor.
Pulse until just combined.
Spread batter into baking pan and top with remaining chocolate chips.
Bake for 22-25 minutes or until toothpick comes out clean.