In a large bowl combine the yogurt, egg, sugar, cinnamon and mix well.
Add the chopped apples and mix.
Add the flour and baking powder and mix until the flour disappears. Do not overmix.
Line a baking sheet with parchment paper and either shape six rolls with oiled hands or use two spoons to shape the rolls.
Bake for about 35-40 minutes. Or until they turn golden brown and a toothpick inserted in the centre comes out clean.
Video
Notes
I used sweet and small McIntosh apples chopped in about 1/2 inch pieces. I suspect you can use other apples too, but if they are not sweet then you may want to increase the amount of sugar.As I wrote above the bread part of the rolls isn't too sweet, so depending on how sweet you like your rolls you may want to add more sugar anyway.If the batter is too sticky, add a bit more flour.