Cook rice per package instructions using 1 3/4 cups water and 1/2 teaspoon salt; keep warm.
In the meantime, in a medium-sized skillet, heat oil over medium heat. Add onions and garlic; cook, tossing frequently, 15 minutes or until onions are golden. The onions should reduce to about 1 cup. Stir in brown sugar, salt, chili paste, and rice vinegar; cook another 3-4 minutes, stirring constantly.
Gently fold rice into onion mixture. Garnish with peanuts and cilantro.