* Preheat the oven to 325F.
* Place the egg whites in a large bowl and using a handheld mixer whip the whites on medium speed for 3 to 4 minutes or until the whites begin to lighten up and hold their shape.
* Increase speed to high and whip in the salt and honey until the whites hold a soft peak, then add the vanilla extract.
* Fold in the yogurt.
* In a separate medium mixing bowl combine the flour and baking powder and mix well.
* Sift the dry ingredients into the egg whites a little at a time, gently folding them in with a rubber spatula.
* Once fully incorporated, scoop the batter into cupcake tins lined with cupcake papers.
* Bake the cupcakes for 15 to 20 minutes or until they have colored and gently spring back when pushed with a finger.
* Remove from the oven and cool the cupcakes at room temp.
* Mix the cream cheese and the banana in a medium mixing bowl until well incorporated, leaving small chunks of banana throughout the frosting.
* Once cool, spread a little of the banana frosting over the cupcakes and serve.