Preheat the oven

• Preheat the oven to 180 °C (350 °F).

Mix the dry ingredients

• In a bowl, combine the flour, salt, cinnamon, baking soda and baking powder.
• Set aside.

Mash the bananas

• In another bowl, mash the overripe bananas.
• Add the brown sugar and mix.

Add the wet ingredients

• Add the milk, egg, melted butter and vanilla essence.
• Whisk until combined.

Fold in the dry ingredients

• Sift the dry ingredients into the wet mixture.
• Gently fold until just combined, without overmixing.

Add the chocolate and fill the pan

• Fold in the chocolate chips.
• Scoop the batter into a muffin pan lined with muffin cups.

Bake the muffins

• Bake in the preheated oven until a skewer comes out clean.