Step 1

Preheat oven to 400 degrees F. Lightly grease a baking sheet; set aside. In a medium bowl combine flour, the 1/4 cup sugar, the baking powder, salt, and baking soda. Using a pastry blender, cut in butter until mixture resembles coarse crumbs. In a small bowl combine egg, sour cream, and milk. Add to flour mixture, stirring with a fork just until moistened.

Step 2

Drop dough into 8 mounds onto prepared baking sheet. Bake for 12 to 15 minutes or until golden. Transfer to a wire rack and let cool.

Step 3

Meanwhile, combine 4 cups of the strawberries and the 3 tablespoons sugar. Using a potato masher, mash berries slightly; set aside. To serve, split shortcakes in half; fill with strawberry mixture and whipped cream. Top with remaining sliced strawberries. Makes 8 shortcakes.