A gorgeous, easy cake – this is just the dessert to serve with coffee for that mid-afternoon slump! And with the Thermomix it takes minutes to create.
Preheat oven to 180C and grease and line a loose-bottomed cake tin.
Place the bananas in the Thermomix bowl and mix on speed 5 for 6 seconds then transfer to another bowl.
Combine oil, eggs and sugar in the bowl and mix on speed 6 for 10 seconds.
Return the bananas to the bowl with the vanilla and mix again on speed 6 for 5 seconds.
Now add the flour, cardamom and buttermilk and mix for a final 10 seconds on speed 4.
Transfer the batter to your cake tin and bake for 35-40 minutes.
Leave to cool in the tin for 5 minutes then turn out to a rack to cool completely.
For the ganache, place the chocolate in your Thermomix bowl and grate on speed 8 for 10 seconds.
Add the cream and melt together at 50C/Speed 4/for 3 minutes.
Pour ganache over cooled cake and let it set before slicing and serving.