Ingredients

6 Japanese eggplants (about 2 pounds total), sliced into 1-inch-thick rounds

1 pound shiitake mushrooms, stems discarded, caps halved

3 tablespoons smooth peanut butter

3 tablespoons rice vinegar

2 tablespoons soy sauce

2 tablespoons finely grated, peeled, fresh ginger

1 to 2 tablespoons light-brown sugar

Coarse salt

Cooked rice, for serving (optional)

4 scallions, cut into 2-inch lengths and thinly sliced lengthwise

Preparation

Fill a large pot with about 1 inch water; bring to a boil. Add eggplant and mushrooms. Reduce heat to medium-high; steam until tender, 8 to 10 minutes.

Meanwhile, place peanut butter in a small bowl. Gradually whisk in vinegar, then soy sauce, ginger, brown sugar, and 1 teaspoon salt until smooth.

With a slotted spoon, transfer steamed eggplant and mushrooms to a large bowl. Add scallions and peanut sauce; toss gently to coat. Serve with rice, if desired.