I haven't done the pattern with the frozen batter before, but have done general cake rolls. The only time I passed the recipe to someone though she (a woman my mother's age) accused me (at about the age of 14) of sabotaging her because it didn't work, so maybe my methods aren't so great lol I just use a jelly roll pan for the baking, then I cover a clean towel, piece of cloth, or a sushi mat with powdered sugar, flip it out carefully and then slowly do the rolling so that it gets accustomed to the shape.