To make crust, mix flour, sugar, and lemon rind. Cut in
butter or margarine until mixture resembles coarse crumbs. Add egg yolk and 1 T of milk; mix gently to form a dough. Pat into bottom of a 10-inch Springform pan that has sides only greased. Press dough up sides of pan for 1 inch.
Toss together bread crumbs and melted butter. Spread evenly over pastry crust. Toss apple slices,lemon juice, and 1/4 c of sugar. Spread apples over crumbs. Drain
raisins, reserving rum, and sprinkle raisins over apples. Bake in a preheated 350 degree F. oven for 15 minutes.
Beat eggs and sugar until thick and lemon-colored. Stir in milk and reserved rum. Pour custard over apples and bake for 45 to 60 minutes at 350 degrees F. until custard is set. Cool completely before serving. Do NOT remove
springform pan until cool.