Follow these eight steps for a moist, golden loaf. The batter comes together quickly, so preheat the oven first.

Step 1: Prepare the oven and pan

• Preheat the oven to 175°C (350°F).
• Grease a loaf pan measuring approximately 23 x 13 cm (9 x 5 inches), or line it with parchment paper.
• Make sure the oven is fully preheated before baking.

Step 2: Mash the bananas

• Peel the bananas and mash them in a large mixing bowl with a fork.
• Leave a few small lumps if you like a more rustic texture.
• For the sweetest flavor, use bananas with plenty of brown spots.

Step 3: Mix the wet ingredients

• Add the melted butter and sugar to the mashed bananas.
• Whisk until combined.
• Add the eggs and vanilla extract.
• Mix until smooth and evenly incorporated.

Step 4: Combine the dry ingredients

• In a separate bowl, whisk together the flour, baking soda, baking powder and salt.
• Add the dry ingredients to the banana mixture.
• Stir gently with a spatula until just combined. Do not overmix, as this can make the bread dense.

Step 5: Add the blueberries and chocolate chips

• Toss the blueberries with 1 tablespoon of flour to help reduce sinking and excess moisture.
• Gently fold the blueberries and chocolate chips into the batter.
• If the batter seems unusually thick, add 1 tablespoon of milk at a time, using only as much as needed.
• If you are using frozen blueberries, add them straight from the freezer without thawing to help prevent the batter from turning purple.

Step 6: Fill the loaf pan

• Pour the batter into the prepared loaf pan.
• Smooth the top with a spatula.
• Sprinkle the extra chocolate chips and blueberries over the surface, if desired.

Step 7: Bake

• Bake for 50-65 minutes, depending on your oven and pan.
• Begin checking at around 45-50 minutes.
• If the top browns too quickly, loosely cover it with aluminum foil.
• Insert a toothpick into the center, avoiding a melted chocolate chip. It should come out without wet batter. A few moist crumbs are fine.

Step 8: Cool and serve

• Let the bread rest in the pan for 10-15 minutes.
• Carefully remove it and transfer it to a wire rack.
• Allow it to cool for another 20-30 minutes before slicing so the crumb can set.
• Serve slightly warm for delicious, melty chocolate chips.