Preheat the oven and mix the wet ingredients

• Preheat the oven to 180 °C.
• Mash the bananas in a bowl, then add the eggs, greek yogurt, maple syrup and vanilla extract.
• Mix until combined, without over mixing.

Add the dry ingredients

• Add the plain flour, protein powder, baking powder, baking soda, cinnamon and salt.
• Mix until just combined, again without over mixing.

Fold in the chocolate chips

• Add the chocolate chips and fold them gently into the batter.

Bake the muffins

• Scoop the batter into a prepared muffin tin.
• Bake until cooked through.