01 - Set the oven to 375°F and line a baking sheet with parchment paper.
02 - Combine sliced apples, sugar, raisins, cinnamon, nutmeg, optional nuts, lemon juice, and lemon zest in a large bowl; mix thoroughly and set aside.
03 - Place a clean kitchen towel on a work surface. Lay one sheet of phyllo dough on the towel, brush lightly with melted butter, and sprinkle with a thin layer of breadcrumbs. Repeat to layer 5 to 6 sheets.
04 - Spread the apple mixture evenly along one long edge of the layered phyllo dough, leaving a border.
05 - Using the towel to assist, gently roll the dough over the filling, tucking in the ends to form a log. Place it seam-side down on the prepared baking sheet.
06 - Brush the top of the rolled strudel with the remaining melted butter.
07 - Bake in the preheated oven for 35 to 40 minutes until golden brown and crisp.
08 - Allow to cool slightly, dust with powdered sugar, slice, and serve warm.