This classroom-based research emerged out of the purpose of the teacher-researcher to improve students' listening comprehension. The setting is an ELT preparatory class at a Turkish state university with 19 voluntary and convenient English language learners as participants. The intervention of metacognitive listening instruction implemented once a week for 45 minutes is hypothesized to be helpful in enhancing listening comprehension and metacognitive awareness. One group pre-test/posttest experimental design was employed to achieve the purpose of the study. In this design, a metacognitive awareness listening questionnaire (MALQ) was administered before and after the experiment. Midterm and final exams served as pre-test and post-test to evaluate listening comprehension levels. The findings elicited from the descriptive and inferential statistics indicated that while students' listening comprehension improved, their metacognitive awareness did not increase except for the subcomponents of planning/evaluation and person knowledge. The outcomes were interpreted and discussed by referring to previous studies. A number of pedagogical implications were also presented.