01 - Slice each croissant in half horizontally using a serrated bread knife.
02 - Using a small spatula, spread a generous layer of softened goat cheese over the bottom half of each croissant.
03 - Distribute the thinly sliced apple evenly over the goat cheese on each croissant.
04 - Drizzle honey or fig jam over the apple, if desired.
05 - Add a layer of arugula or baby spinach and season with freshly ground black pepper.
06 - Sprinkle chopped walnuts or pecans atop the greens for added texture, if using.
07 - Position the top halves of the croissants to close each sandwich.
08 - Serve immediately, or wrap sandwiches and refrigerate for up to 2 hours.