Adolescence is a developmental period characterized by intense changes, which impact the interaction between individuals and their environments. Moral reasoning (MR) is an important skill during adolescence because it guides social decisions between right and wrong. Identifying the cognitive underpinnings of MR is essential to understanding the development of this function. The aim of this study was to explore predictors of MR in typically developing adolescents (n = 92, 33 males, M = 16.3 years, SD = 2.2 years) and the specific contribution of higher order cognitive processing using an innovative visual MR assessment tool and measures of executive functioning and intelligence. MR maturity was correlated with four executive functions (cognitive flexibility, feedback utilization, conceptual reasoning, verbal fluency) and was predicted by four variables: age, intelligence, nonverbal flexibility and verbal fluency. Overall, these results contribute to a better understanding of MR during adolescence and highlight the importance of using innovative tools to measure social cognition.