01 - Using a bread knife, slice each croissant in half horizontally.
02 - Spread a generous layer of softened goat cheese onto the bottom portion of each croissant.
03 - Distribute the thin apple slices evenly over the goat cheese layer.
04 - Drizzle honey or fig jam over the apples, if desired.
05 - Top with arugula or baby spinach and season with freshly ground black pepper.
06 - Sprinkle chopped walnuts or pecans for added crunch, if using.
07 - Close each sandwich with the top croissant half and serve immediately, or wrap well and refrigerate for up to 2 hours.