Preheat the oven to 350. Lightly grease a 9x13 glass baking dish. Cut the sweet rolls in half, width wise. Transfer the bottom half of the rolls to the glass dish. Spread mayo and dijon mustard on the rolls.
Add the turkey then spread out the cranberry sauce on top. Top with havarti cheese and arugula. Top with the top half of the rolls.
Add butter to a small bowl and microwave until its melted. Add dried parsley, garlic salt, and onion powder. Mix and brush the mixture on top of the rolls.
Cover the entire pan with tin foil and bake for 15 minutes. Remove the tin foil and bake an additional 5 minutes. Remove and let the rolls cool for a few minutes, then dive in and enjoy!