Objective: To develop and evaluate a portion plate for adolescents (Nutri-plate). Methods: Sixteen African American adolescents (mean age = 12.94 years; 66% male) were randomized to participate in either plate design or nutrition education sessions. Adolescents' input was used to create the Nutri-plate, and participants' food selection and intake was evaluated. Results: Adolescents indicated the plate should include simple yet colorful visual and textual information about healthful eating. Participants left less food on their plate when dining with the Nutri-plate as compared with a plain plate (P less than 0.01). Examination of effect sizes suggested that when using the Nutri-plate, participants selected less food overall (d = 0.73), more fruit (d = -0.64), more broccoli au gratin (d = -0.85), and less steamed broccoli (d = 0.87). Participants with higher body mass index selected a greater amount of healthful food when using the Nutri-plate (P less than 0.05). Conclusions and Implications: Further evaluation is needed to determine the influence of a portion plate on adolescents' nutritional behaviors. (Contains 1 figure and 1 table.)