Refer to the package instructions to thaw the puff pastry and preheat the oven to 400 F accordingly.
Line a baking sheet with parchment paper.
Roll the sheet of puff pastry out, only lengthwise until it is about 18" long.
Visually divide the puff pastry into thirds lengthwise without actually cutting it.
Make diagonal slices into the sides of the puff pastry, on the left and right third, at a 45 degree angle, going down.
Wherever there are triangles of dough at the top and bottom, formed between the slits and the center third rectangle, once all slits have been made, cut them out.
Place the puff pastry onto the parchment lined baking sheet.
Spread the bread crumbs over the middle third rectangle of the dough leaving a 1/2" border at the bottom and a 1" border at the top with no bread crumbs.
Spread the cooled cherry filling over the bread crumbs, leaving the same borders.
Whisk an egg yolk and and 1 tablespoon of water together in a bowl with a fork.
Starting at the bottom fold up the center third of the puff pastry that has no filling on it to enclose a 1/2" of the filling.
Alternate a strip from the left side and then one from the right side, over the filling, until you reach the last two strips.
Fold the bottom flap up and then fold the bottom two strips over the top using the egg wash to stick the strips down.