@christianselig I saw someone else suggest oxyclean, but I’ll do one better. Get a powdered cleaner called PBW designed to clean beer brewing equipment. They sell it in home-use sized containers for home brewers. It’s basically oxyclean plus some surfactants and other additives that will absolutely destroy any and all burnt on organics with just a couple minutes soak. The downside is getting another tray or tub big enough to hold the air fryer tray. Mix with near boiling water for max effect.