In a medium bowl, combine the first eight ingredients.

Combine egg, milk and oil; stir into dry ingredients just until moistened. Fill greased or paper-lined muffin cups with a rounded tablespoon of batter. Top each with a rounded table spoon of apple butter and remaining batter.

Combine topping ingredients. Sprinkle over muffins. Bake at 400°F for 15-18 minutes. Cool in pan for 10 minutes before removing to wire rack. Makes 12 standard-size muffins.