A unique method for promoting reflection among engineering students was used in the present study involving a digital circuits course. The method combined computer-based simulation for digital circuit design with reflective-thought prompts after a midterm exam for post-exam analysis and reflection. This method was first implemented in a microelectronics course using the SPICE simulator. Lessons learned from the initial implementation were applied to the digital circuits course. These lessons learned included the need to scaffold students in the use of the simulation tool for reflection, the need to balance frequency of reflection with student workload and fatigue, and question prompts that voluntarily elicit broad thought after a milestone event such as a midterm exam (versus a quiz). Using a published depth rubric, the assessment results found increased depth of reflection in the present course relative to the initial implementation in microelectronics. Specifically, there were increases in depth of reflection after the midterm exam in the present course versus the midterm exam and two quizzes in the microelectronics course. The increases in depth were significant relative to the quizzes. There was also an increase in the relative occurrence of broad reflections in the present course, with significant differences compared to the quizzes. Although significant differences were not found in the final exam averages based on depth of reflection after the midterm exam or participation in this reflection, results from a follow-up survey several months after the course ended indicated benefit for students. Specifically, 80% of those who competed the reflection exercise indicated a high or very high perceived benefit from doing so. Of the approximately 50% who chose not to complete the reflection exercise, the primary reasons were identified via the follow-up survey. Findings from this work align with and add to the developing literature on student reactions to reflection.