Basil Tsiokos of Newburgh, New York, writes: "My best friend and I recently spent a week at Sanctuary on Camelback Mountain, a spa resort near Scottsdale, Arizona. Our goal was major exercise and minor calories, but on the last night we splurged at Elements with the richest dessert we could find — slices of chocolate-glazed frozen peanut butter mousse."
Don't use natural-style peanut butter for this recipe; do start making it the day before serving.