Preheat the oven to 325 degrees. Line a 9x13 inch baking dish with non-stick foil, or prepare with baking spray.
Separate the Hawaiian Rolls, and place the bottom half of each roll into the prepared baking dish.
Layer with turkey, cranberry sauce and cheese then place the top half of the rolls back on top.
In a small bowl, whisk together the melted butter, mustard, garlic powder and poppy seeds.
Pour mixture over the top of the buns, and use a brush or spoon to spread evenly over the top.
Cover with foil and bake for 15 minutes. Remove the foil and bake for 3 more minutes, uncovered. Serve immediately