My Mother'S Apple Pirog (Pie) - cooking recipe

Ingredients

9 to 12 apples
1/2 c. sugar
2 tsp. cinnamon
1/2 c. oatmeal
3 tsp. lemon juice
1/4 lb. butter
1/2 c. sugar
2 eggs plus 1 white
3 c. flour
1/4 c. milk
3 tsp. baking powder
1/2 tsp. salt
1 tsp. vanilla
1 egg yolk plus a tsp. water

Preparation

Pare apples, cut into eighths and discard centers with seeds. Cover with 1/2 cup sugar (1 cup if you prefer greater sweetness), cinnamon and oatmeal.
Sprinkle with lemon juice and set aside while preparing the dough.