Sieve together flour, baking powder, baking soda, salt and cinnamon powder in a mixing bowl.
Roughly mash the banana with your fingers or with a fork and keep aside.
Peel, core and finely chop the apples and keep aside.
In a blender, add mashed bananas, yogurt, vegetable oil, vanilla extract and pulse at regular intervals till they all are combined well.
Transfer the blended mixture to a large mixing bowl.
Add sugar and stir well.
Add the flour mixture in 3 batches while mixing with a spatula.
Do not over do it but just mix till you do not see any flour patches.
Finally stir in chopped apples and mix to distribute evenly.
Pre heat the oven to 180 C / 350 F.
Grease a 12 muffin tray with oil.
I used paper cups and did not grease them.
Fill the cups with the muffin batter till they are 3/4th full, leaving enough space for the muffin to rise while baking.
Bake for 25 – 30 mins or till a skewer inserted in the center comes out clean.
Take the tray out and let it come to room temperature.
Eggless Apple Banana Muffin are ready.
Enjoy either as a healthy breakfast filled with fruits or as a snack.