Preheat your oven to 350˚F.

In a bowl, cut flour into butter until crumbles are formed.  Add the sour cream and salt.  Mix well.  Shape into a ball and cover.  Refrigerate overnight.

To make the filling, combine the bread crumbs and melted butter.  Add the remaining ingredients. Set aside.

Divide the chilled dough into thirds.  Roll each onto a floured surface into a 15 inch by 12 inch rectangle.  Spoon the filling onto the dough and spread within 1 inch of the edges.  Roll from the long size.  Pinch seams and ends to seal.

Place seam side down on an ungreased baking sheet.  Bake at 350˚F for 55 to 50 minutes or until lightly brown.  Cool on a wire rack.