Preheat oven to 180°C.
Then mash the bananas with a fork until they're creamy.
Stir in all the wet ingredients until fully combined.
Add the following one at a time stirring each in fully before adding the next: sugar, oats, bicarbonate of soda, baking powder and salt.
Add the cinnamon and flour together until all the lumps of flour have disspaeared.
Stir in the seeds and raisins being careful not to work the mixture too much.
Line a loaf tine with margarine or oil and pour in the mixure.
Bake for 45-50 minutes or until a toothpick comes out clean.
Allow the cake to sit in the tin for 30 minutes before cooling and slicing. If you can resist leaving it to then rest for another 30 minutes is best to let it completely set.