Gluten Free 5 minute cake

Modified from the 5 MINUTE CHOCOLATE MUG CAKE recipe.

2 tablespoons brown rice flour
2 tablespoons tapioca flour
2 tablespoons corn starch
5 tablespoons sugar
2 tablespoons baking cocoa
1 egg
3 tablespoons milk
3 tablespoons oil
3 tablespoons chocolate chips(optional)
a small splash of vanilla

1 coffee mug

Add dry ingredients to mug, and mix well.
Add the egg and mix thoroughly.
Pour in the milk and oil and mix well.
Add the chocolate chips (if using) and vanilla essence
and mix again.

Put your mug in the microwave and cook for 3 minutes at
1000 watts. The cake will rise over the top of the mug, but
don't be alarmed!
Allow to cool a little, and tip out onto a plate if desired.
EAT! (this can serve 2 if you want to feel slightly more virtuous).
Put some whip cream and chocolate syrup over it and it is even more fab!