Preheat the oven to 350 degrees F and line a 9” x 5” loaf pan with parchment paper.
Drain and rinse the black beans of any liquid and pat them dry with a paper towel (they don’t need to be perfectly dry, just not overly saturated).
Transfer the black beans to a blender along with the rest of the ingredients (except chocolate chips) and blend until smooth. If adding chocolate chips, stir them into the batter.
Transfer the batter to the parchment-lined loaf pan and bake for 40 to 50 minutes, until the bread feels firm when gently poked in the center. If the top of the bread appears as though it's getting too dark, you can cover the loaf pan with aluminum foil at any point. A great way of testing whether or not bread is cooked through is by taking its internal temperature using a digital thermometer. To do so, insert a thermometer into the center of the bread. If it is 190 degrees or higher, it is fully cooked!
Allow bread to cool at least 30 minutes before slicing and serving.
Notes
Nutrition facts calculated with the chocolate chips