Preheat oven to 350°F (175°C) and apply non-stick coating to a 9x13 inch baking dish.
Bisect the entire slab of rolls horizontally to create a continuous top and bottom half.
Place the bottom half of the rolls into the baking dish.
Layer the turkey breast evenly across the surface of the bottom rolls.
Spread the cranberry sauce in a uniform layer over the turkey.
Arrange the Havarti cheese slices over the cranberry sauce to ensure edge-to-edge coverage.
Place the top slab of rolls onto the assembly.
In a small vessel, whisk the melted butter, Dijon mustard, poppy seeds, onion powder, and Worcestershire sauce until emulsified.
Apply the butter mixture to the top of the rolls using a pastry brush for even distribution.
Cover the baking dish with aluminum foil and bake for 10 minutes.
Remove the foil and continue baking for 10 minutes until the cheese reaches melting point and the bread tops exhibit golden-brown color.
Allow the dish to rest for 5 minutes to stabilize the internal structure before slicing into 12 individual sliders.