Grilled Peach, Arugula, Pistachio and Feta Salad

The Salad:

1 small head of arugula Ask a question about this ingredient

1/4 thinly slice Vidalia onion Ask a question about this ingredient

1/2 cup pistachios - shelled Ask a question about this ingredient

3/4 cups Feta cheese - crumbled Ask a question about this ingredient

2 firm peaches - sliced and grilled Ask a question about this ingredient

For the dressing:

2 tablespoons champagne vinegar Ask a question about this ingredient

4 tablespoons walnut oil Ask a question about this ingredient

1 pinch Salt and pepper Ask a question about this ingredient