Add the shredded chicken, celery, grapes, and green onion to a large bowl. Toss to combine. Set bowl aside.
In a small bowl, add the mayonnaise, sour cream, dill, salt, pepper, and lemon juice. Whisk together until combined. Pour the dressing over the chicken mixture. Stir until combined.
Cover and refrigerate at least 4 hours.
Slice each croissant roll in half. Spread 1/2 cup of chicken salad over bottom half. Top with the other half. Serve and enjoy!Add the shredded chicken, celery, grapes, and green onion to a large bowl. Toss to combine. Set bowl aside.
In a small bowl, add the mayonnaise, sour cream, dill, salt, pepper, and lemon juice. Whisk together until combined. Pour the dressing over the chicken mixture. Stir until combined.
Cover and refrigerate at least 4 hours.
Slice each croissant roll in half. Spread 1/2 cup of chicken salad over bottom half. Top with the other half. Serve and enjoy!