If you can't find packaged chopped dates, use 8 ounces of pitted whole dates and cut them yourself. Dates are sticky, so lightly coat the knife with nonstick cooking spray. Or try freezing the dates for 1 to 2 hours, and using kitchen scissors dipped in water to easily snip them. Eight ounces of pitted dates yield about 1 1/2 cups of chopped dates.
One 2-ounce bag of walnuts yields about 1/2 cup of chopped walnuts.
To dress up these bars for dessert, cut them into larger squares. Place the bars on individual plates and top each with a dollop of whipped cream and a toasted walnut half.