Mix all ingredients except the chocolate chips in a food processor.
Fold in the chocolate chips, reserving ¼ cup.
Oil a 7 ½" x 9 ½" (or similar size) baking dish with coconut oil, or line it with parchment paper. Spread mixture into baking dish.
Peanut Butter Swirl
Add peanut butter and sweetened condensed coconut milk into a saucepan over medium heat. Stir to combine. Heat until well combined.
Swirl mixture into brownies. Sprinkle the reserved chocolate chips on top.
Bake at 350°F for 40-45 minutes. Stick a toothpick in the brownies to test them, keeping in mind you may hit a chocolate chip so it may not appear clean.
Notes
Make sure to rinse and drain the black beans. Rinsing removes unwanted salt. Draining is necessary because they already add a lot of moisture - you don't need any excess water.Store in an airtight container in the fridge. They will last about a week.