If you choose to grate your butter do this step first and keep it in the freezer until ready to use. Then just stir it into the flour mixture, no need to cut it in because it is small enough already.
These roll may be made ahead of time and froze until ready to bake. Just place in greased pan then lay a piece of plastic wrap on top of the rolls. Cover with foil and freeze for 2-3 weeks. When ready to bake remove from the freezer 20 minutes before placing in the oven. Bake at 425 degrees for 25 minutes or until golden.