Use only overripe Bananas, which are high in sugar content and for their beautiful Banana flavour.
Apples should be crunchy in texture.
Feel free to experiment with flavours. You can substitute vanilla with cinnamon and nutmeg. It is purely optional.
If you do not have brown sugar, swap with regular sugar in the same quantity.
You can swap milk with warm water.
It takes 40 to 50 minutes in my oven to bake. Every oven behaves differently, so have an eye after 30 minutes.