Mash the bananas in a bowl. Now add in the lemon juice, egg, olive oil, milk, jaggery powder and vanilla extract to the mashed banana and whisk all the ingredients till they are completely blended.
In a separate bowl, add whole wheat flour, baking powder, salt and cinnamon. Mix everything together using a hand whisk and make a well in the center.
Add the wet ingredients mixture inside the well created out from dry ingredients, and slowly mix all the ingredients together to form a uniform blend (I use a simple hand whisk for mixing). Don't over mix, just blend till you see a smooth mixture.
Once the dry and wet ingredients form a homogeneous mixture, gently fold in the diced papaya.
Preheat oven to 350 degree F. Scoop out 2-3 tablespoons of mixture and pour into the greased muffin cups (To grease the muffin pan, rub the muffin cups with little oil and then lightly dust each individual cup with a little whole wheat flour). I was able to make 12 muffins in total.
Once the oven is pre-heated, bake the muffins in the oven for around 25 minutes or till the muffins are done using the toothpick test, that is, when the inserted toothpick in the muffin comes out clean. Remove the muffins from the oven, and allow them to cool for 5-10 minutes.
The Healthy Papaya Banana Muffins are ready to be served warm, or these can be stored in an airtight container in the refrigerator for a week!