1) Preheat oven to 350 degrees.
2) Mix the stuffing, onions, celery, garlic, walnuts, pepper, oregano and thyme together in a large bowl.
3) Add the kimchi, juice, butter and broth. Toss well. The stuffing should be moist (not soggy).
4) Transfer stuffing to a large baking dish and cover with foil. Bake for about 30 minutes.
5) Remove foil and bake for another 5 minutes, or until the top has browned.