Line an 8×8 oven-safe baking dish or pan with parchment paper. To help it stick, wet the paper, ring it out, then form it into the dish
Drain and rinse the beans and add them, along with all other ingredients, to a food processor. Blend on high, or "puree", for 2 minutes until creamy
Spoon the batter into the prepared baking dish and bake for 20-25 minutes
While the brownies are cooling completely, melt the chocolate chips in a double boiler by heating 2 inches of water in a saucepan. Place the chocolate chips in a stainless or glass bowl that sits on top of the pot. You don't want the water to heavily boil and splash into the chocolate. Stir the chocolate as it melts, then drizzle on the brownies. Slice into 9 even squares