My cuppa chocolate brownie - guilt-free

Here's my easy-peasy, guilt-free, instant choco brownie. The spark in this recipe is that in spite of it being extremely easy n convenient, it is super-healthy. This, with a cup of milk can be your kid's weekend breakfast. The whole deal is DONE in 5 mins or less; we don't need a whole lot of ingredients; n to top it all we can make it as healthy as we want it to be or as junkie as the party demands :) So...here we go

Need:
A big-enough cup
2 tsp butter (You can go up to 2 tbsp...for a very smooth n moist cake)
1 tbsp brown sugar (this makes a low sweet brownie...u may adjust sugar as per your taste)
1 egg
1/8 tsp baking powder
1 tbsp cocoa powder
Few drops vanilla essence/extract
Flour mix: Here's the trick....we need 4 tbsp of flour (or the likes) for this recipe. You can mix n match....feel free to experiment here....it only adds to the excitement. I am presenting here my healthy version:
3 tbsp whole wheat flour
1 tbsp rolled oats (large flakes)
[Alternatively you can use 4 tbsp all purpose flour to get that gourmet experience to serve in a party.]

Procedure:
Melt the butter in the cup on high in a microwave - takes 20 secs
Mix in the sugar and vanilla
Add the egg and beat well
Gradually fold in the flour mix and cocoa powder
Now take your stirrer/spoon out and pop this awesome cup into the microwave oven. Cook on high for 1 minute. Allow standing time for another minute. Take out the brownie and test with a slim knife - if it comes out clean...we're done. Else add another 10 secs in the oven.
Now pop the brownie out on a clean plate ..... it comes out great!
To garnish: You may sprinkle on top some hot chocolate powder/ icing sugar and serve warm with milk/tea/coffee :)
[might consider tossing in some chopped walnuts and dried cranberries for added health benefits]
Enjoy!