PREHEAT oven to 400°F. Mix flour, cereal, sugar and baking powder in large bowl; set aside. Beat peanut butter, milk and egg in small bowl until well blended. Add to flour mixture; stir just until moistened. Stir in cranberries, raisins and apple just until moistened.
SPOON evenly into 12 medium muffin cups.
BAKE 20 min. or until golden brown. Cool.
serving size = 1 muffin (70 g)