Swensen’s Strawberry Shortcake

Name: Swensen’s Strawberry Shortcake
Cuisine: European, British
Ingredients: Pound Plus Cake; 1 and 1/2 cups softened butter (3 sticks); 2 cups white granulated sugar; 4 eggs; 1 cup sour cream (you can substitute unflavored yogurt for a lighter cake); 1/2 teaspoon baking powder; 1 teaspoon vanilla; 2 cups cake flour; 3 boxes of fresh strawberries; Whipped Creme Fraiche; 2 cups heavy whipping cream; 1/2 cup white granulated sugar; 1/2 cup sour cream (or unflavored yogurt); 1/2 cup brown sugar