Sieve the flour, baking powder and baking soda in a bowl.
In separate bowl mash the banana with a fork or you can use a blender. Add sugar and milk, stir and let sugar dissolve. Add vanilla essence and oil and mix.
Add the flour mixture and tutti frutti in wet mixture and fold gently to make a smooth batter.
Grease a cake pan. Pour batter in it.
Microwave it high for 9 minutes.
A toothpick inserted should come out clean.
Remove from cake pan. let it cool down completely, demould, cut and serve.
Yummy, instant and healthy cake is ready to relish.