1 pound (about 1 large or 2 medium-sized) fresh Walla Walla Sweet onions
Pesto Dressing (recipe follows)
1 large (about 3/4 pound) firm-ripe tomato, cored and cut crosswise into 1/4-inch-thick slices
Fresh basil sprigs, for garnish
Salt and pepper, to taste

Cut the onions crosswise into thin slices and separate rings into a bowl. Pour the dressing over onions and gently mix. On 3 or 4 dinner or salad plates, arrange equal portions of the tomato. Top with equal portions of onions and dressing. Garnish with the basil sprigs, if desired. Add the salt and pepper to taste.

Makes 4 servings.

PESTO DRESSING: In a small bowl, whisk together 1/4 cup extra-virgin olive oil, 3 tablespoons red-wine vinegar and 2 tablespoons pesto (either homemade or commercially prepared).