HEAT oven to 350ºF.
COMBINE fruit, 2 Tbsp brown sugar blend, nutmeg, zest and juice; spoon into 8- or 9-inch square baking dish.
MIX remaining brown sugar blend, oats, cookie crumbs and margarine until well blended; sprinkle over fruit mixture.
BAKE 30 to 35 min. or until fruit is tender. Serve topped with Cool Whip.