In large bowl, combine flour, 1/4 C sugar, baking powder and salt. Using pastry blender or 2 knives, cut in 1/3 C butter until mixture resembles coarse crumbs. Stir in chocolate chips. Add milk; stir until dough holds shape. On floured board, knead dough lightly. Roll dough into 16 balls.
Preheat oven to 375. In small saucepan, melt remaining 1/3 C butter. Pour 1/2 of melted butter into 8-inch square baking pan. In cup, combine remaining 1/2 C sugar and cinnamon. Sprinkle 1/3 cinnamon/sugar mixture over butter in baking pan. Place dough balls in single layer in pan. Brush remaining butter over dough and sprinkle with remaining cinnamon/sugar mixture. Bake at 375 for 30 minutes. Cool 10 minutes; remove from pan. Serve warm or at room temperature.
Bake