Marinating tofu before roasting it in a hot oven infuses it with flavor and gives it a firm outside and soft center. Start this recipe a day ahead, or first thing in the morning, to get a jump start on dinner. Serve roasted tofu over jasmine brown rice and garnish with a sprinkle of finely minced green onion.
To make a sauce: Pour the reserved marinade into a small sauce pan, add a ½ teaspoon of cornstarch, and simmer on medium low heat while the tofu is roasting. It should reduce to about ⅓ of its original volume and become syrupy. Drizzle the sauce over the roasted tofu when serving.