This is all you need!
Mix dry ingredients together (flour, sugar, salt, cocoa powder)
Add the wet stuff (water, oil)
Mix should be pretty hard to stir, but if it's too dry just add a bit more water.
Microwave on high for about 1 min, depending on the power of your microwave. It might need a little bit more or less.
It should look 'set' but still be pretty moist in the middle.
Best enjoyed with a big scoop of icecream.
Nom nom nom!