The crisp, with the addition of the oats, is simply the Americanized version of a crumble. Since this is an Old-Fashioned Rhubarb Crumble, I have NOT used oats. Feel free to add them, if you want ...

Old Fashioned Apple Crumble ... It’s a comforting and nostalgic dessert that’s sure to impress. Strawberry Rhubarb Crisp.