PREHEAT grill to medium heat. Meanwhile, brown meat in nonstick skillet on medium heat; drain. Add onions; cook until tender, stirring occasionally. Stir in remaining ingredients.
SPOON into 13x9-inch disposable foil pan; cover tightly with foil. Place pan directly on grill.
GRILL 10 to 15 min. or until bean mixture is heated through and bubbly.