Preheat oven to 350 degrees

Grease 9 x 9 square brownie pan

Rinse beans in colander

In blender or food processor puree beans and oil.

Add eggs, cocoa, sugar, coffee, and vanilla. Pulse until blended.

Melt half of the chocolate chips in microwave or over double boiler.

Add melted chocolate to mixture and pulse to combine.

In small bowl, whisk together flour, baking powder, and salt.

Combine wet mixture with dry mixture. You can put the dry mixture in the blender or food process or or just pour it into the dry mixture bowl and mix by hand.

Stir in remaining chocolate chips.

Pour mixture into baking pan.

Bake 20 minutes at 350 or until the edges are done, but the middle is still shiny.

Let cool 15 minutes.

Cut and serve.

Optional: top with a dusting of powdered sugar.