Chocolate Mug Cake

What you need:

butter 1 tablespoon

brown sugar 2 tablespoons

egg 1

flour 4 tablespoons

cocoa powder 2 tablespoons

optional:

chocolate chips

cup

spoon

microwave

Melt the butter in hot water and add all the brown sugar into the cup. Beat the egg inside the cup,pour in cocoa powder. Add flour mix well. cook in the microwave until the brownie puffs up.