This Strawberry Rhubarb Crisp is super easy to make and no one will realize that it is special "diet" food.
Stir together the rhubarb, strawberries, sugar and cinnamon in a medium saucepan. Cook over medium heat, stirring often, until fruit begins to exude juice and gently simmer, about 5 minutes. Meanwhile in a small bowl whisk together the cornstarch and lemon juice. Add to the hot fruit mixture and simmer for a minute or two, stirring often, until fruit filling looks glossy and bit thickened. Scrape into prepared pie plate.