Put all the ingredients in the blender except the chocolate chips.
1 15.5- ounce can of northern beans, 2 large eggs, 1 teaspoon baking powder, 2 teaspoon vanilla extract, ⅔ cup dark brown sugar, ½ cup whole wheat flour, ¼ cup unsweetened cocoa powder, ⅓ cup chocolate chips
Blend until smooth.
Pour half the batter into the square cake pan sprayed with non-stick cooking spray. Bang it to get the batter to cover the bottom, then evenly distribute the chocolate chips to create a layer.
Drizzle on the remaining batter and shake the pan again to distribute it evenly throughout the pan.
Bake for 25 minutes.
Wait as long as you possible can before cutting in. For me it was literally 30 seconds. I'm joking of course because what's better than warm brownies? You HAVE to cut in while they are still hot!