FIRST In a medium bowl, whisk dressing ingredients together and season with salt and freshly ground black pepper.
NEXT Cut peaches in half and remove pit. Grill, face down, over medium-high heat on a well oiled grill or indoor grill pan. Grill for 3 minutes or until grill marks form, flip peaches and continue grilling for an additional 2 minutes.
LAST Slice peaches and toss with arugula in a large bowl, drizzle with enough dressing to lightly coat. Top salad with crumbled goat cheese and pistachios and serve. Any leftover dressing will keep in the refrigerator for up to 3 days