Step 1

Heat oven to 400°F. Grease bottoms only of 12 regular-size muffin cups with shortening or cooking spray, or line with paper baking cups.

Step 2

In large bowl, beat milk, oil, vanilla and egg with fork or wire whisk until well mixed. Stir in flour, 1/2 cup sugar, the baking powder, salt and 1/2 teaspoon cinnamon all at once just until flour is moistened (batter will be lumpy). Stir in apple. Divide batter evenly among muffin cups. In small bowl, mix topping ingredients; sprinkle over batter.

Step 3

Bake 25 to 30 minutes or until golden brown. If baked in greased pan, let stand about 5 minutes in pan, then remove from pan to cooling rack; if baked in paper baking cups, immediately remove from pan to cooling rack. Serve warm if desired.