Training can improve healthcare providers' cultural competence and increase their awareness of bias and discrimination in medical decision-making. Cultural competences training is lacking in the education of dieticians in the Netherlands. The aim of this study was to describe the pilot-implementation of a cultural competence training for dieticians and preliminary evaluation of the training. A training was developed based on Seeleman's cultural competence framework and previously held interviews with migrants, dieticians, and experts. The training consisted of a mixture of didactic and experiential methods, alternating knowledge transfer with exercises to increase awareness, reflection, and feed-back on recorded consultations, and communication training with migrant training actors. The training was piloted in 8 participating dieticians and preliminary mixed-method evaluation was done using a Cultural Competence Questionnaire, Experience Evaluation Questionnaire, and consultation observations. The questionnaires showed that dieticians were positive about the training. They found it valuable and educational. Participants reported an increase in self-perceived cultural competence and attitudes. Knowledge and skills remained approximately the same. The observations showed that dieticians applied the teach-back method and discussed treatment options more often after training. There was no increase in the use of visual materials. The training was well appreciated and, although a small-scale pilot, this mixed-method study suggests an ability to change cultural competence. The combination of a self-assessment instrument and consultation observations to evaluate cultural competence was highly valuable and feasible. These encouraging results justify a broader implementation of the training.