If your child loves Oreos and ice cream, this Oreo ice cream cake will be a hit at their birthday party. Start by crushing a package of Oreos and mixing them with melted butter. Press the mixture into the bottom of a greased cake pan to form the crust. Next, soften a tub of vanilla ice cream and spread it over the Oreo crust. Crush more Oreos and sprinkle them over the ice cream layer. Repeat the layers until the cake pan is full, ending with a layer of crushed Oreos on top. Freeze the cake until firm, then slice and serve. This cake is a delicious combination of crunchy Oreos and creamy ice cream.