Preheat and prepare the pan

• Preheat the oven to 175 °C.
• Grease and line the loaf pan with baking paper.

Mix the wet ingredients

• Mash the bananas in a mixing bowl until smooth.
• Whisk in the melted butter and brown sugar until combined.
• Beat in the eggs and vanilla extract.

Combine the dry ingredients

• In another bowl, whisk the flour, baking soda, salt and cinnamon together.

Make the batter

• Fold the dry ingredients into the wet mixture until just combined.
• Stir in the chocolate chips, being careful not to overmix.

Layer with cookie dough

• Pour half of the batter into the loaf pan.
• Scatter pieces of cookie dough over the batter.
• Cover with the remaining batter and dot more cookie dough on top.

Bake the banana bread

• Bake until golden and a skewer inserted in the center comes out with a few moist crumbs.
• Let the bread cool in the pan for 10 min before turning out onto a rack.

Cool and slice

• Let the banana bread cool completely before slicing.