CRUST:

1 c. flour
1/2 c. sugar
1/2 tsp. baking powder
1/2 tsp. salt
1 c. butter
2 egg yolks, beaten

Combine flour, sugar, baking powder, and salt. Cut in butter as for pie crust. Mix in egg yolks (mixture will be crumbly). Press half of mixture in bottom of 15x10 pan (may also use 13x9 pan). Set remaining half aside.

FILLING:

4 c. sliced apples
1/2 c. sugar
1 tsp. cinnamon
1/4 tsp. nutmeg
2 egg whites, slightly beaten

Combine all of filling ingredients except egg whites; arrange over bottom crust. Crumble remaining crust mixture over filling. Brush egg whites over all. Bake at 350 degrees for 30 minutes for jelly roll pan or 40 minutes for 13x9 pan. Cool. Drizzle with thin confectioners sugar glaze. Yields 3-4 dozen bars.