01 - Preheat your oven to 400°F. Line a baking sheet with parchment paper.
02 - Combine almond flour, sugar, egg white, softened butter, almond extract, and salt in a medium bowl. Mix thoroughly until a smooth, spreadable paste forms.
03 - Roll out the thawed puff pastry on a lightly floured surface into a 12x12 inch square.
04 - Cut the pastry into 4 equal strips, then cut each strip in half crosswise to create 8 rectangles.
05 - Place approximately 1 tablespoon of almond filling down the center of each rectangle, leaving a 1/2-inch border around all edges.
06 - Fold each rectangle in half lengthwise over the filling. Press edges firmly to seal. Using a sharp knife, make 3-4 diagonal cuts along the sealed edge to create the claw effect. Gently curve each pastry into a slight arc to fan out the toes.
07 - Transfer pastries to the prepared baking sheet. Brush each bear claw generously with beaten egg. Sprinkle with sliced almonds and coarse sugar if desired.
08 - Bake for 18-22 minutes until puffed and deeply golden brown.
09 - Allow pastries to cool on the baking sheet for 5 minutes before serving.