Preheat oven to 375.
Combine brown sugar and cinnamon.
Whisk together eggs and milk.
Mix together flour and baking powder and stir it into the egg/milk mixture.
In a skillet, heat butter, add the apple slices and 1 tablespoon of the brown sugar mixture and cook, stirring, until soft. About 5 minutes.
Pour the batter over the apples and sprinkle the remaining brown sugar on top.
Bake until it puffs up, about 18-20 minutes.
Dust with a little powdered sugar.
