Preheat oven to 350. Grease a sheet cake pan/ cookie sheet.
Mix cake mix according to package directions, using the specified number of egg whites instead of whole eggs.
Pour cake mixture into pan and bake for 20 minutes, or until cooked through. Let the cake cool completely.
Meanwhile, prepare the Danish Dessert or strawberry pie filling according to package directions and let it cool completely. (I usually pop mine in the freezer to speed up this process.)
Mix cream cheese, powdered sugar and vanilla with electric mixture until well blended.Set aside.
Wash strawberries and slice them into halves or thirds.
Spread the cream cheese mixture on top of the cooled cake, then layer the strawberry glaze, followed by the slices of strawberry.