In a large skillet combine butter, onion, mushrooms and sausage. Cook until sausage is lightly browned. Place mixture in a large bowl and add sage, marjoram, allspice, egg yolk, and chicken. Lightly toss together.
Combine 2-3 rolls together (depending on how big of bundles you want- we just used 2 rolls per bundle) and flatten into a circle. Repeat with remaining rolls. Divide chicken mixture equally between the circles. Moisten edges of dough with water and fold over mixture to completely encolose. Place folded side down on a sprayed baking sheet. Brush with beaten egg white. Place 3 whole sage leaves on top, if desired, and brush again. Cover with plastic wrap and let rise 15 minutes (I actually skipped this step and they turned out fine). Remove wrap and bake at 350 degrees for 30-35 minutes or until golden brown.
We dipped our bundles in marinara sauce and it was delicious!