The literature defines curiosity and interest, but it is not clear how interest can be generated, where interest is positioned in the learning process, and what the impact of interest is on cognitive and emotional development. This paper reports on a three-year, iterative design-based research project involving three separate cohorts totalling 57 early learners in an early learning setting in Southern Queensland, Australia. The young learners aged 4-5 years, engaged in an enrichment program that extended over a two-week period for each of 15 topics. Insights were gained on how young children developed interested in a topic. An emergent model of authentic interest was developed, showing how interest is situated centrally in the learning process. It also shows how interest raised awareness, exploration, and new knowledge, creating a cycle of repeated engagement with the topic, thereby enhancing cognitive and emotional development.