Silky, caramelized eggplant glazed with a savory-sweet teriyaki sauce — this easy pan-sautéed dish comes together in under 30 minutes and makes a stunning appetizer or side dish.
Whisk together all marinade ingredients in a small bowl. If using granulated sugar, stir until fully dissolved.
Trim the stems from the eggplants and cut each one in half lengthwise.
Pour about ⅓ cup of the marinade into a wide skillet and set over medium heat. Arrange the eggplants cut-side down in a single layer.
Cover and cook for 8 to 12 minutes, until the cut sides are deeply golden and the eggplants are nearly tender. Check often and add more marinade if the skillet dries out.
Flip the eggplants skin-side down and cook for 3 to 5 minutes more until fully tender. Add a splash of marinade, raise the heat to high, flip cut-side down again, and sear for about 1 minute to caramelize the glaze.
Transfer to a plate and garnish with sliced scallions. Serve hot or at room temperature. Pass any remaining marinade at the table, or refrigerate for up to one week.