This paper introduces the interdisciplinary approach integrated into the FERTILE Design Methodology (FDM) that blends Educational Robotics (ER) and Arts to cultivate computational thinking (CT) skills in a blended learning context. The paper demonstrates how ER and Arts can be combined to create interdisciplinary learning experiences through the presentation of two exemplar projects. Both projects guide students through a series of five (5) steps—Understanding the Challenge, Generating Ideas, Formulating the Solution, Creating the Solution, and Evaluating the Solution—ensuring the integration of both disciplines while fostering CT skills cultivation such as abstraction, decomposition, pattern recognition, algorithmic thinking, and evaluation. Insights from educators involved in designing and implementing these projects highlight the methodology's potential to promote interdisciplinary collaboration and student CT skill development. This paper provides practical guidance for educators seeking to implement Artful ER projects with their students, emphasizing the potential of interdisciplinary approaches to enrich student learning.