DOUGH:

3 c. flour
1/2 lb. butter
3 egg yolks
1/2 c. sugar
3 tsp. baking powder
Juice of 1 lemon
3/4 c. sour cream

FILLING:

1/4 c. cracker crumbs
4 or 5 apples, sliced
Sugar, amount depending on tartness of apples
Grated lemon rind
1/2 to 2/3 c. ground nuts

Mix butter and flour as for pie dough; add slightly beaten egg yolks and rest of ingredients. Roll or pat 1/2 of dough into greased pan.

FOR FILLING: Put sliced, cracker crumbs and nuts on top of dough; sprinkle with sugar and lemon rind. Put other half of dough on top. Brush with unbeaten egg white; sprinkle with nuts and sugar. Bake at 325 to 350 degrees until light brown.