01 -
Preheat oven to 180°C (350°F). Line a muffin tin with paper liners and lightly grease the liners to prevent sticking.
02 -
In a large bowl, mash the ripe banana thoroughly. Add Greek yogurt, egg, maple syrup, vanilla extract, and a pinch of salt. Stir well until you achieve a smooth, well-combined mixture.
03 -
Add the oat flour, protein powder, and baking powder to the wet mixture. Begin to stir the ingredients together while gradually adding the milk. Start with about 45 ml (3 tbsp) and add up to 80 ml (⅓ cup) until the batter reaches the right consistency. The amount needed will depend on the type of protein powder used - vegan and casein protein powders typically require more liquid than whey.
04 -
Gently fold the chocolate chips into the batter until evenly distributed.
05 -
Fill each prepared muffin liner about ⅔ full with the batter. Sprinkle additional chocolate chips on top of each muffin if desired.
06 -
Bake in the preheated oven for 20 to 25 minutes. The muffins are done when a toothpick inserted into the center comes out clean. Be careful not to overbake, as this can make the muffins dry.
07 -
Remove the muffins from the oven and let them cool on a baking rack for about 15 minutes before serving.