In a microwave safe bowl, take the dark chocolate chips, microwave for a minute, stir and again microwave for a minute.
Now add the butter, MW again for 30 Secs. Whisk well to melt the dark chocolate and butter together.
Add in powdered sugar, mix well, followed by curds. Combine everything well.
Add in Multigrain atta and mix gently.
Add the vanilla essence along with baking soda, baking powder. Gently combine the batter.
Preheat the oven to 185 C, and line a 8" pan with parchment paper.
Transfer the batter and pat it down.
Bake for 30 to 35 minutes. Check if done. Let it rest overnight for a smooth cut.
Alternatively you can also refrigerate for the slices to come out well.
The brownie is very rich and has a crumbly texture, this is not fudgy, even though its very buttery.