Shred apples, cook with sugar til thick (~20mins).

Add cinnamon and walnuts. Set aside.

Preheat oven to 180 degrees C (350 degrees F).

Combine yogurt, baking powder, butter, and oil.

Slowly add in the flour, until a soft, shiny dough forms.

Leave in a warm place for 15 minutes.

Divide dough into 25 balls.

Flatten balls into squares with a rolling pin.

Fill each square with 1 tbsp apple mixture.

Fold over and pinch to form turnovers.

Bake on cookie sheet for ~20 mins.

Cool and sprinkle with powdered sugar.