This product will help your students write detailed written responses to text-dependent questions. It's called RACE: Restate- Answer-Cite Evidence- Extend. After a few modeled lessons, the students will be able to effectively and thoroughly respond to open-ended questions.
There is an 18-slide PowerPoint with examples on how to use RACE with your students. There is also a RACE poster (or) student sheet for their writing toolkit, as well as a detailed assessment rubric.
I began using the RACE process with my students several years ago, and it has been a great success. Now all teachers in my school use RACE, and many schools in our county are using it as well.