When whipping cream it is helpful to put your mixing bowl and beater in the freezer for 15 minutes prior to making. You can make this in a 9 x 13 but I would increase the Oreo cookies to 25 with 4 tablespoons of butter and add 3 cups of sliced strawberries.
Find it online: https://www.smalltownwoman.com/strawberry-lush-cake/