01 - Slice the tempeh into thin strips approximately 1/3 inch thick for even cooking.
02 - Whisk together soy sauce, rice vinegar, maple syrup, and smoked paprika in a medium bowl until well combined.
03 - Add tempeh strips to the marinade, ensuring they are fully coated. Let marinate for 10 minutes, turning once halfway through.
04 - Mix cornstarch, salt, and black pepper in a separate bowl until evenly distributed.
05 - Remove strips from marinade and dredge each piece thoroughly in the cornstarch mixture, pressing gently to adhere coating on all sides.
06 - Add 3 tbsp vegetable oil to a large nonstick skillet and heat over medium-high heat until shimmering.
07 - Cook tempeh in batches without overcrowding, turning occasionally, until golden brown and crispy on all sides, approximately 6-8 minutes. Transfer to paper towel-lined plate.
08 - Wipe out the skillet and add 2 tbsp vegetable oil with minced garlic. Sauté for 30 seconds until fragrant but not browned.
09 - Add chili paste, soy sauce, maple syrup, sesame oil, and water. Stir continuously and simmer for 1 minute until slightly thickened.
10 - Return crispy tempeh to skillet and toss gently to coat evenly with sauce. Cook 1-2 minutes until heated through. Transfer to serving plate.
11 - Sprinkle with chopped scallions and toasted sesame seeds immediately before serving.