Heat oven to 350. Spray a baking pan w/ cooking spray. In lg bowl, beat egg. Stir in breadcrumbs, cranberries, onion, salt and allspice.Add ground turkey and mix well. Shape into 60 mini meatballs. Place meatballs in baking pan. Bake 15 min. In a 4-quart slow-cooker, stir together cranberry sauce and BBQ sauce. Add meatballs, stir to combine. Cover, cook on low for 2-3 hrs, or on high for 1-1/2 hrs. Serve w/ toothpicks.