Writing is a critical skill that is considered important for employment, further education, civic participation, health, and personal fulfillment. For example, a substantial percentage of nearly all jobs that non-college graduates possess, require some type of writing. Workers are increasingly required to use their writing skills for memos, reports, and emails and may find their ability to move into well-paying jobs or enroll in technical training programs limited by their inadequate writing skills (Gillespie, 2001). Adults who lack these skills have limited opportunities to acquire them (National Commission on Adult Literacy, 2008). Despite the importance of writing, there is little research on the writing knowledge, skills, and strategies of adult education learners or research on instruction designed for their needs. This digest provides a brief review of the research in this area. We begin with general information about the writing process and proceed to what is known about adult learners. Evidence-based writing practice centers around strategy instruction, and therefore our digest emphasizes strategy instruction. We end with practical guidance and implications for instructors. [This paper was published in "Adult Literacy Education Research Journal" Fall 2023.]