My sister's tips: Don't cut the croissant all the way through. Rather, cut it leaving a hinge at the back so that the filling doesn't fall out when you're trying to eat it. Also, cut the chicken small (less than 1/2-inch cubes). Cubes that are any bigger also tend to fall out of the roll while you're eating.
Fruited Chicken Salad Sandwiches (from Crystal Bell)
10 large skinless, boneless chicken breasts, cooked and cut into small cubes
1 cup diced celery
2 cups halved red grapes (seedless)
1 large can Mandarin oranges, well drained
1 small can crushed pineapple, well drained
1/4 cup thinly sliced green onion
1/4 cup slivered almonds
1 cup mayo
1 tablespoon sugar
1 teaspoon kosher salt
freshly ground black pepper
12-16 large croissants, sliced horizontally
Combine everything (except croissants) in a very large bowl and mix gently until thoroughly combined. Serve immediately or after chilling it in the fridge. To serve, spoon filling into sliced croissants and enjoy!
Makes about 4 quarts salad (maybe a skosh more), or enough filling for 12-16 large croissants.