Heat oven to 400°F Combine flour, sugar, baking powder and salt in large bowl; mix well. Cut in 1/2 cup butter with pastry blender or fork until mixture resembles coarse crumbs. Stir in half of chopped cookies.
Combine whipping cream, eggs and vanilla in small bowl; beat with wire whisk until well mixed. Stir whipping cream mixture into flour mixture just until moistened. Turn dough onto lightly floured surface; knead 8 or 10 times until smooth.
Pat into 8-inch square on lightly greased baking sheet. Press remaining chopped cookies onto top of dough. Score into 9 equal squares. Score squares diagonally to form 18 small triangles.
Bake for 15 to 18 minutes or until scones are lightly browned. Cool 10 minutes. Cut along score lines to separate.
Meanwhile, combine powdered sugar, melted butter and half & half in small bowl until smooth. Drizzle glaze over warm scones. Serve immediately.