Although the literature consistently documents strong improvements in metacognitive skills over the elementary school years, relatively little is known about the mechanisms fueling these developments. One factor that is being discussed in the literature and targeted in the present approach is cue utilization. Cue utilization quantifies the degree to which an individual uses mnemonic experiences during task mastery to inform monitoring processes. In the present study, retrieval fluency as a valid and ubiquitous cue during recognition was assessed by recording children's choice latencies in a recognition test and by relating these to confidence ratings. A sample of second graders and fourth graders was assessed 3 times over one year in terms of their recognition performance, the time needed to select an alternative, and their monitoring accuracy. Results revealed age differences in monitoring accuracy, cue utilization, and cue validity. Moreover, while monitoring accuracy increased over time in both age groups, cue utilization increased only in the younger children. Analyses were completed by an individual differences approach showing that cue utilization is a factor driving recognition improvements over time, underlining the importance of metacognitive experiences for development.