01 - Combine soy sauce, rice vinegar, and maple syrup in a medium bowl. Add tempeh cubes, toss to coat evenly, and let marinate for 10 minutes.
02 - Whisk together maple syrup, soy sauce, sriracha, sesame oil, ginger, garlic, and rice vinegar in a small bowl until smooth. Set aside.
03 - Mix cornstarch, salt, and black pepper in a separate bowl. Remove tempeh from marinade and toss cubes in cornstarch mixture until thoroughly coated.
04 - Heat neutral oil in a large nonstick skillet over medium-high heat. Arrange coated tempeh in a single layer. Cook 3-4 minutes per side, turning until all sides are golden and crispy, about 10-12 minutes total.
05 - Reduce heat to medium. Pour chili maple glaze over crispy tempeh. Toss continuously for 2-3 minutes until sauce thickens and evenly coats all pieces.
06 - Remove from heat immediately. Transfer to serving plate and top with sliced green onions and toasted sesame seeds. Serve hot.