I made a cup of brownie.

4 tablespoons of brownie mix
4 tablespoons of baking mix
1 tablespoon of butter
an 1/8 cup of water
one egg

In a large cup or bowl, combine the water and butter.
Heat the water and butter to melt the butter, 30 seconds on high in the microwave.
Add powdered mix to heated water and melted butter, mix evenly.
Add egg, mix thoroughly.
Microwave until the brownie mix rises to the top of the cup, about 60 seconds in my case.

I waited a couple of minutes and microwaved the cup another 30 seconds.

I waited a couple of minutes and then started eating it.

The brownie mix is about half strength, and has a mild, chocolate taste.