Abstract T his study aimed at using the genre-based approach to develop Faculty of Education English majors' expository writing and environmental awareness. The study was conducted in the second term of the academic year 2023-2024 during the "writing1" course. The study adopted the pre-experimental design. 120 students enrolled in the 1st year basic Education (English majors) program at Minia Faculty of Education participated in the study and acted as two study groups, a control group taught by the regular method, and an experimental group taught by a genre-based approach. The instruments of the study included a test in expository writing and an environmental awareness scale. The genre-based approach consisted of ten sessions in expository writing, two hours a week through face-to-face meetings.  Results showed statistical improvement in the post-measurement of expository writing and the environmental awareness of the experimental group. Recommendations and suggestions for further research are presented.