Melt 1 (24-oz.) package almond bark candy coating. Pour about 3/4 cup onto parchment; spread into a thin 4- × 12-inch rectangle. Transfer parchment to top of a muffin pan; freeze 20 minutes. Repeat 4 times. Let bark stand at room temperature 10 minutes; break into pieces. Adhere to cake with frosting. Mound center with berries.