Cook the rice: Bring water, butter, and salt to a boil, add rice, cover, and simmer until tender.
Coat chicken in cornstarch for a crispy texture.
Heat oil in a skillet and cook the chicken until golden brown.
In a bowl, mix sweet chili sauce, soy sauce, hoisin sauce, garlic, and chili flakes.
Pour the sauce over the cooked chicken and stir until well coated.
Simmer for a few minutes until the sauce thickens and clings to the chicken.
Garnish with sesame seeds and green onions.
Serve hot with rice and enjoy!