Smooth and fluffy coconut cake layers made with real coconut milk paired with a sweet pineapple filling make up the base flavors of this delicious pina colada cake. Each cake layer is brushed with a dreamy rum and coconut milk soak that screams summer. And last, but certainly not least, the whole cake is covered in a dreamy whipped coconut buttercream frosting. It's everything pina colada and everything delicious!