Preheat oven to 350. Grease and flour a 12 x 17 sided sheet pan.
Mix cake mix, eggs, oil, champagne and water.
Pour batter into prepared sheet pan.
Bake as directed, 18-22 minutes.
Let cake cool completely and remove from pan by flipping pan upside down.
Cut cake in half exactly down the middle.
Frost the top only of one half of the cake with Duncan Hines Strawberry Shortcake Frosting Creations.
Place the other half of the cake on top of the frosted half.
Cut the layered cake into 12 rectangles and chill for 30 minutes.
Decoratively frost the top only of the Strawberry Shortcake Squares and garnish with a fresh strawberry.