Preheat oven to 180 degrees Celsius or 356 degrees Fahrenheit
Add flour, oats, baking soda and cinnamon to a large mixing bowl
Roughly chop the walnuts and add to the bowl
Mash bananas in a separate dish
Add Greek yoghurt and coconut oil to the bananas and mix well to combine
Add honey and peanut butter to a small saucepan and warm over a very low heat for around one minute until well combined. Pour into the dry flour mixture
Add banana mixture to the dry flour mixture and stir to combine
Lightly whisk an egg. Pour into the bowl with the other ingredients and mix well
Fill muffin liners three quarters full and bake for 20 minutes or until the tops are turning golden. Stick a sharp knife through the centre and if it comes out clean they are ready
Transfer to a wire rack to cool. Store at room temperature
Recipe by at https://www.caseyjade.com/whole-wheat-banana-muffins/