HEAT oven to 375ºF.
MIX turkey and cheese mixture; shape into 28 (1-1/2-inch) balls. Place on rimmed baking sheet sprayed with cooking spray.
BAKE 20 min. or until done (170ºF). Meanwhile, cook and stir nuts in small skillet on medium heat 2 min. Add sugar; cook and stir 1 min. or until sugar is melted and nuts are evenly glazed.
COMBINE arugula, apples, meatballs and nuts in large bowl. Add dressing; toss to coat.