Induced neurons (iNs), the product of somatic cells directly converted to neurons, are a way to obtain patient-derived neurons from tissue thatis easily accessible. Through this route, mature neurons can be obtained in a matter of a few weeks. Here, we describe a straightforward andrapid one-step protocol to obtain iNs from dermal fibroblasts obtained through biopsy samples from adult human donors. We explain each stepof the process, including the maintenance of the dermal fibroblasts, the freezing procedure to build a stock of the cell line, seeding of the cellsfor reprogramming, as well as the culture conditions during the conversion process. In addition, we describe the preparation of glass coverslipsfor electrophysiological recordings, long-term coating conditions, and fluorescence activated cell sorting (FACS). We also illustrate examplesof the results to be expected. The protocol described here is easy to perform and can be applied to human fibroblasts derived from human skinbiopsies from patients with various different diagnoses and ages. This protocol generates a sufficient amount of iNs which can be used for a widearray of biomedical applications, including disease modeling, drug screening, and target validation.