Grease 12 med. muffin cups or line with paper baking cups. In bowl beat egg with juice, oil and vanilla. Stir in flour, sugar, baking powder and salt, just until flour is moistened (batter will be lumpy). Stir in nuts and apples.
,p>Fill prepared muffin cups; sprinkle with sugar and cinnamon. Bake at 400° F about 20 min. or until golden brown. Servings: 12 muffins