5 mins coffee mug chocolate cake (easy and quick recipe)

Ingredients:

4 tablespoons - all purpose flour/ maida
4 tablespoons - sugar
2 tablespoons - coco powder
3 tablespoons -  milk     
2 tablespoons - vegetable oil
2 tablespoons - butter
1 - egg
1 teaspoon - vanilla essence
2 teaspoons - coco chips (optional)

Method :

Whisk all the ingredients together and pour into coffee mug (don't fill the coffee mug with the cake mixture completely, leave some gap for the cake to raise up). Cook for 3-4 mins(in high) in microwave.
If you want, you can decorate the cake with what ever you like.