Preheat the oven to 180 degrees C/ 160 degrees C fan. Line the bread tin with baking paper.
Beat the soft butter with the sugar until light and fluffy, then add the maple syrup and beat again. You can use a whisk or a hand mixer.
Add the eggs, one at a time and whisk with the buttery mix.
Add the gluten free self raising flour, the oat flour, baking powder, soda, kanthan gum and ginger and mix well.
In the end add mashed bananas to the bowl with the rest of ingredients and whisk for the last time.
Place the batter in a lined baking bread tin and bake for 40- 45 minutes. When a skewer comes out clean, take it out of the oven and firstly let cool in the tin. Then remove from the bread tin and cool on a wire rack.
Enjoy!