Stir together strawberries and 1/4 c sugar. Set aside. For shortcake, thoroughly stir together flour, 2 Tbsp sugar, baking powder, and salt. Cut in 1/2 c butter or margarine until mixture resembles coarse crumbs. Combine beaten egg and milk. Add all at once to dry ingredients and stir just to moisten. Spread dough in a greased 8x1 1/2-inch round pan, building up edges slightly. Bake at 450 for 15 to 18 minutes. Cool in pan 10 minutes. Remove from pan. Split into 2 layers. Remove top layer carefully. Whip cream with 2 Tbsp sugar just to soft peaks. Spoon berries and whipped cream between layers and over top. Serve warm.