Thaw the puff pastry based on the package instructions. Preheat the oven to 400 degrees F. Line a baking sheet with parchment paper.
Sprinkle the breadcrumbs in the center of the puff pastry (lengthwise). The pour the cherry pie filling in the middle on top of the breadcrumbs
Then cut slits down each side of the puff pastry and fold them over the top of the cherry pie filling and bottom to secure the pie filling. Make sure to pinch the puff pastry as you go.
Whisk together the egg and water. Brush the top of the strudel with the egg wash.
Bake for 30-35 minutes until the strudel is puffy and golden brown. Rotate the baking sheet halfway through the cook time to make sure that it browns evenly.
Remove the strudel from the oven and let it sit for 10 minutes. Then dust the strudel with the powdered sugar, slice, serve and enjoy!
Notes
This strudel is best served the day that it’s baked but you can refrigerate the leftovers in an airtight container for up to 5 days.