Bake Play Smile
Add the dry ingredients to the Thermomix bowl and sift by mixing for 5 seconds, Speed 10.
Place the bananas into the Thermomix bowl and mash by mixing for 5 seconds, Speed 4. Insert the butterfly and add the softened butter. Mix for 1 minute, Speed 3 to combine. Then add the raw sugar and brown sugar to the mixture & mix.
With the blades turning on Speed 3, alternate adding the dry ingredients with the buttermilk and continue mixing until only just combined. Scrape down the sides of the bowl and mix for a further 5 seconds, Speed 5.
Pour the cake mixture into a greased 23cm round baking tin and bake for 45-50 minutes, depending on your oven.
Add all of the frosting ingredients to a clean Thermomix bowl.
Spread the frosting over the cooled cake and serve!