Preheat oven to 400 F. Grease or paper-line muffin cups
In a large bowl, combine the flour, brown sugar, baking powder and salt.
In another bowl, combine the milk, butter, syrup, sour cream, egg and
vanilla. Stir into the dry ingredients just until moistened. Drain
apples and fold in.
Fill prepared muffin cups two-thirds full.
For topping, combine the flour, sugar, nuts and cinnamon; cut in butter until crumbly. Sprinkle over batter.
Bake for 16-20 minutes or until muffins test done. Cool for 5 minutes before removing from pans to wire racks.
Yield: 16 muffins