Preheat the oven to 180 degrees.
Take a cake tin and put baking paper in it.
Place all dry ingredients (except nuts and berries) in a bowl and mix together.
Place all wet ingredients, including the bananas, in a blender and blend until smooth.
Pour the batter over the dry ingredients in the bowl and mix well until 1 (sticky) is formed.
Finally add the blueberries and nuts and mix 2 more times.
Pour the batter into the cake tin and spread over the entire length. Smooth the top nicely.
Place in the oven for 45 minutes.
After 45 minutes, check whether the cake is cooked inside. Stick a skewer into the banana bread and if it comes out wet, put it in the oven for a few more minutes, until it's dry inside.
Let it cool completely before slicing it.