Begin with Duck
Start with the duck breast, this will be the outside layer of the turducken roll.
Prep the Duck
Place the duck breast skin side down on a cutting board and make one thin cut from left to right almost all the way through the breast. Open the cut to the right and make another thin cut almost all the way through the meat, this time right to left beginning at the crease. Open the second cut to the left. The duck breast should open like a business letter.
Prep the Chicken
Lay the chicken thighs on the cutting board.
Pound the Chicken
Cover the thighs with plastic wrap or waxed paper and gently pound them to an even inch thickness. Wrap and refrigerate.
Prep the Turkey
Lay the turkey cutlets on the cutting board.
Assemble First Layer
Retrieve the duck breast from the refrigerator and place it, long side toward you, on the board. Dollop some stuffing onto the breast, and smooth it out so it covers the whole breast.
Assemble Second Layer
Lay the chicken thighs on top of the duck and stuffing, and put a smaller spoonful of stuffing on top of them.
Assemble Third Layer
Lay the turkey cutlets on top of the chicken and stuffing layer and put a very small amount of stuffing just down the center of the cutlets.