Prepare the ingredients: Chop the onions and garlic cloves. Chop the kimchi into small and large chunks. Make sure the rice is ready to go.
Stir-fry: Add butter and grapeseed oil to the pan. Add the chopped onions and garlic to the pan. Cook for three to five minutes until caramelized. Add the aged-kimchi and stir-fry until golden brown for approximately eight minutes on medium low heat. Add the oyster sauce and brown sugar. Mix well. Add the rice and cook for another five minutes.
Serve: Add the kimchi bokkeumbap to a bowl and top with a sunny-side up egg. Add a generous amount of sesame seed oil and gim. Sprinkle sesame seeds on top.