Tahini banana cake - Good Food Middle East

Ingredients

• 100g unsalted butter, softened, plus extra for the tin
• 250g light brown soft sugar
• 85g tahini
• 2 large eggs, lightly beaten
• 1 tsp vanilla extract
• 275g plain flour
• ½ tsp bicarbonate of soda
• 60ml milk
• 2-3 small, very ripe bananas, mashed (about 275g)
• 3 tbsp sesame seeds
• 115g unsalted butter, softened
• 125g icing sugar
• ½ tsp vanilla extract
• 2½ tbsp tahini
• 3 tbsp chocolate chips