French bread rolls need to be cut open slightly before baking to prevent steam from building up, which can cause the rolls to burst. Cooking teacher and author Lauren Groveman demonstrates her technique for producing attractive designs while ensuring proper steam release.Freshly risen French bread rolls need to be cut open slightly to prevent them from bursting when they’re baked. In this video, cooking teacher, author, and TV host Lauren Groveman demonstrates her technique for producing attractive designs while ensuring proper steam release.