Remove all croissants from first can and place on a pizza stone (or other pan) in a circular pattern, points out, with center edges slightly overlapping.
Remove all croissants from second can and place on pizza stone (or other pan) in a circular pattern, points in, with edges slightly overlapping croissants from the first can.
Press the ends (not the points) of the croissants together to seal them.
Mix the mayonnaise, mustard, pepper, turkey, celery, cranberries, cheese, and nuts together. Using a large cookie scoop, place the turkey mixture around the wreath where the croissants overlap.
Starting with an inside croissant, pull it up and over the turkey filling. Take the corresponding outside croissant and pull it up and over the filling as well. Croissants do not have to perfectly overlap.
When all croissants have been pulled over filling, bake in 375 degree oven for 25-30 minutes, until golden brown. Serve warm.