This study investigates the process of identifying high-quality lessons for gifted learners that integrate the arts with science, technology, engineering, and mathematics (STEM) fields. These STEAM lessons have the potential to develop deep thinking, as well as develop creativity and visual--spatial skills that are necessary in the STEM disciplines. Lessons were solicited from teachers through their involvement in national organizations, and 61 lessons were analyzed and reviewed by experts in the arts and STEM fields, as well as master teachers. High-quality lessons provided deep content knowledge in both STEM and arts fields, connections across content areas, specific criteria for assessment, and collaborations between teachers and between students. The findings from this study will be used to further define the evaluation process for STEAM lessons designed for gifted learners and to develop professional development opportunities for teachers of the gifted.