Different areas of education have undergone a significant transformation due to the rapid progress of extended reality in recent years. Nonetheless, existing eXtended Reality (XR) authoring tools often require advanced programming skills, limiting their accessibility to educators and students. To address this challenge, we introduce BabloXR, an intuitive authoring tool that leverages Blockly to enable visual, code-free programming for creating educational XR environments. BabloXR was evaluated through a user study involving teachers and students who successfully designed their own XR learning environments. The results indicate that users of BabloXR were able to create complete and detailed scenarios, with usability testing revealing high ease of use, positive user experience, and strong interest in extended reality.