1Preheat oven to 400 degrees and lightly grease your muffin pans; set aside.
2In a large mixing bowl, combine flour, sugar, and baking powder. Cut in the butter until ,mixture resembles coarse crumbs.
3Beat egg and milk together; stir into crumb mixture just until moistened. Fold in chopped cookies. Fill greased muffin pans 2/3 full. Set aside while you prepare the topping.
4Topping: Combine flour, sugar, and crushed cookies. Cut in butter until coarse crumbs. Sprinkle the crumb topping on each muffin..approx. 1 Tblsp.
5Place in the oven and bake for 16-18 minutes. or until a toothpick inserted in center comes out clean. Cool for 5 minutes before removing from pans.
Melt white chocolate & shortening until smooth. Drizzle melted chocolate over the tops of the muffins and cool.