Ingredients

1/4 cup extra-virgin olive oil, plus more for drizzling

2 medium white onions, thinly sliced

6 medium celery stalks, peeled and cut lengthwise into 1/8-inch-thick slices

2 teaspoons coarse salt

6 medium zucchini, trimmed and cut lengthwise into 1/8-inch-thick slices

Freshly ground pepper

Preparation

Heat oil in a large skillet over medium-high heat. Add onions, celery, and salt. Cover; cook, stirring occasionally, until onion is translucent, about 5 minutes. Add 1/2 cup water; cover, and cook until celery is tender, about 5 minutes.

Stir in zucchini. Season with pepper. Cook, stirring once or twice, until zucchini is very tender, 5 to 6 minutes. Using a slotted spoon, transfer vegetables to a serving platter, and drizzle with oil. Serve warm or at room temperature.