01 -
Place the chuck roast into a slow cooker or a large oven-safe pot.
02 -
Combine soy sauce, hoisin sauce, honey, rice vinegar, brown sugar, garlic, ginger, sesame oil, and chili flakes in a mixing bowl. Stir until evenly blended.
03 -
Pour the sauce mixture evenly over the chuck roast, ensuring full coverage.
04 -
For slow cooker: cook on low heat for 6 to 8 hours. For oven: preheat to 325°F (160°C) and bake for 3 to 4 hours, or until meat is tender and easily shredded.
05 -
Transfer remaining sauce to a saucepan, simmer over medium heat. Stir in cornstarch slurry and continue stirring until the sauce thickens to a glaze, approximately 3 to 5 minutes.
06 -
Pour the thickened glaze over the cooked roast, coating it thoroughly with the sticky sauce.
07 -
Sprinkle sesame seeds and sliced green onions on top before serving.