Place frozen dinner rolls into a 9x13-inch baking dish, cover, and thaw in the refrigerator overnight (or at least 8-10 hours). When ready, flatten each thawed roll into a circle and place on a greased cookie sheet. Top each dough circle with shredded Cheddar cheese and chopped turkey. Pull up edges of roll around the meat and cheese to form a ball and pinch edges together to seal. In a small bowl, combine the grated Parmesan cheese and ranch mix and in a separate small bowl, melt the butter. Dip the top of each roll into the melted butter and then into the Parmesan/ranch mixture.
Place rolls, seam-side down, into a greased 9x13-inch baking pan, spacing evenly, to allow room to rise. Cover pan with plastic wrap and allow to rise in a warm place until rolls have doubled in size, about one hour. When rolls have risen, preheat oven to 350 degrees. Remove plastic wrap and bake for 16-17 minutes or until golden brown on top. If they are browning too fast, you can always tent a piece of foil over the top of the pan for the last few minutes of baking. Remove from oven, cool slightly, and serve.