Preheat oven to 200°F. Grease an 8x8-inch baking pan with coconut oil and set aside.
Blend the beans, dates, nut butter, and vanilla in a food processor or blender until smooth. Add the cocoa powder, chia seeds, flax seeds, cinnamon, and cayenne and blend again. Add the dried cherries and pulse until combined.
Transfer batter to prepared pan (batter will be very thick). Press down until evenly distributed. Sprinkle coarse sea salt on top of batter and press lightly so that the salt sinks into the batter. If desired, you can also sprinkle some dark chocolate chips on top and press these into the batter.
Bake for 1 ½ hours. Cool completely before cutting into brownies. Enjoy!