Tips:
This recipe is really easy to make in advance. When I make this, I buy the fish fresh and make the rolls, then line them up on a baking pan and place in the freezer. When ready to serve, all you have to do is defrost the rolls fully (do it overnight in the refrigerator) and throw together the sauce. Pour over the fish and bake for one hour. You can then either put it back in the oven to warm before serving or just serve at room temperature.
Variations:
Rosemary can be replaced with Italian parsley.
Replace sole Can I use tilapia instead of sole?
Sole is a bit softer than tilapia. But it should work the same.