Preheat oven to 400º F. Place brussels sprouts in a 9-inch baking dish and set aside.
Dissolve miso in hot water and add remaining ingredients, mixing until combined. Pour mixture over brussels sprouts and stir to coat thoroughly.
Cover dish with foil and bake brussels sprouts in preheated oven for 25-30 minutes or until tender.
*Trader Joe’s sells shaved brussels sprouts, but should you not be able to find them, you may use regular brussels sprouts. First remove and discard the root ends, wash the brussels sprouts thoroughly, then either shred with a food processor, or thinly slice with a knife.