Norwegian Apple Pie

Directions

1. 1
   Preheat oven to 350F/180C/Gas Mark 3.
2. 2
   Spray an 8-inch pie plate with a non-stick cooking spray.
3. 3
   Beat the egg whites, sugar, vanilla, and baking powder until smooth and fluffy.
4. 4
   Beat in the flour until smooth and well blended.
5. 5
   Stir in the apples.
6. 6
   Pour into the pie plate and bake for 30 minutes.
7. 7
   The pie will puff up as it cooks, then collapse as it cools.