40gunsalted butterplus extra for greasing the loaf tin
350gpeeled weight of bananasroughly mashed
¼teaspooncinnamon
160gcaster sugar
2large eggs
180gplain flour
1teaspoonvanilla extract
2teaspoonsbaking powder
½teaspoonbicarbonate of soda
100gdark chocolate chips
Instructions
Preheat the oven to 170°C/340°F (150°C fan) and grease and line a large loaf tin with baking paper. I used a 22cm x 11cm x 7cm loaf tin - anything similar in size or proportions will work just as well.
Add the butter to the Thermomix and melt for 3 min/60°C/speed 2, checking to make sure it's fully melted before moving on.
As the butter melts, roughly mash the bananas with a fork in a separate bowl, then stir through the cinnamon.
Once the butter has melted, add the sugar and eggs to the bowl and mix for 20 sec/speed 4. Scrape down the sides, then repeat for another 20 sec/speed 4 so everything's well combined.
Add the flour, mashed banana, vanilla extract, baking powder and bicarbonate of soda to the bowl and mix for 10 sec/reverse/speed 3 - it will look lumpy at this stage.
Fold the chocolate chips through with a spatula, along with any flour still sitting at the edges, taking care not to overmix.
Tip the batter into your prepared tin and bake for 50-60 minutes, or until a skewer comes out clean from the centre - baking time can vary slightly depending on your oven and the exact size of your tin.
Leave it in the tin to cool for 10 minutes, then transfer to a wire rack to cool completely before slicing.
Notes
Storage: The chocolate chip banana bread is best eaten within 3 days, stored in an airtight container at room temperature. It can be kept in the fridge for up to a week, though the texture is best at room temperature.