Preheat oven to 350 degrees Fahrenheit. Unfold the puff pastry sheet and gently roll it out.

Mix the mustard and duck sauce and spread it all over the puff pastry sheet.

Place the cold cuts over the pastry in layers, alternating between the turkey, salami and pastrami. Roll the dough up like a jelly roll and place seam-side-down on a Gefen Parchment-lined baking sheet.

Brush the roll with more duck sauce. Sprinkle generously with everything bagel seasoning.

Gently cut shallow slits on top of the roll to allow steam to escape.

Bake for 45 minutes, until golden and puffed.