Apple Strudel photo and recipe

My mom got this recipe from her friend Erika.  Erika was born and raised in Germany.  The filling is made with apples, lemon zest, lemon juice, almonds, raisins and bread crumbs.

Filling:
4 Tbsp. bread crumbs
125 g butter
3 kg sour apples like Granny Smith
75 g raisins
75 g chopped almonds
100 g sugar
cinnamon
2 Tbsp. powdered sugar (optional)

For the crust:
2 cups flour
1 cup sour cream
1 cup butter
a little salt

Cut the butter into flour like you would do to for  a pie crust.  Add the sour cream and mix together.  Put the dough in the refrigerator overnight.  The next day, roll the dough out the length of a cookie sheet.  Place the filling on the dough and smooth the filling out to about an inch of the edges of the dough.   Roll up the dough and pinch the edges together.  Place on an ungreased cookie sheet and bake at 400 degrees for 45 minutes.