Preheat the oven to 350° F.
1) Melt one to two tablespoons of butter in the skillet. Let the skillet cool for about ten minutes.
2) Place the frozen rolls in the skillet. Do not crowd...you want space so that they can raise.
3) Cover the rolls with a dish towel and set aside, in a warm place to raise for at least two hours. I placed the skillet on the fireplace hearth....and it took them about three hours to raise to a nice size. I peaked and turned the skillet once during the raising time.
4) When they have raised they will be puffy and soft. Brush them gently with melted butter.
5) Sprinkle the rolls with chopped rosemary and then with sea salt.
6) Bake for 15 to 20 minutes and are golden brown.