Unroll biscuits, place on baking sheet and bake in the oven according to directions.

Meanwhile, in a medium bowl, combine the strawberries and half of the sugar. Let stand for 1 hour to meld flavors.

In a small bowl, combine remaining sugar and cinnamon.

Remove biscuits from oven; split the biscuits and dredge in cinnamon sugar; place on serving plate. Top biscuits with macerated strawberries.

Place whipped topping in a bowl and fold in the sour cream. Garnish shortcakes with a dollop of whipped topping mixture.