- Preheat oven to 180°C. Grease an 18 x 28cm cake tin or line the base of the pan with non-stick baking paper.
- Place butter, brown sugar and chocolate in a large saucepan and stir over medium heat until well combined.
- Remove from heat and beat in the eggs using a wooden spoon.
- Sift together Natural Evolution Banana Flour, cocoa and baking powder into the chocolate mixture and stir until well combined. Stir in the walnuts.
- Pour into the prepared tin and bake in the preheated oven for 35-40 minutes or until firm and until a few crumbs cling to a skewer when it's inserted into the centre.
- Preheat oven to 180°C. Grease an 18 x 28cm cake tin or line the base of the pan with non-stick baking paper.
- Place butter, brown sugar and chocolate in TM bowl, combine on speed 8 for 30 seconds then set to 80C for 2 mins on speed 6.
- Stop heat and beat in the eggs one at a time on speed 6.
- Add Natural Evolution Banana flour, cocoa and baking powder into the chocolate mixture mix on speed 8 for 30 seconds.
- Add walnuts and backward mix on speed 4 for 30 seconds.
- Pour into the prepared tin and bake in the preheated oven for 35-40 minutes or until firm.