White Chocolate S’mores Gooey Cake Bars ... Easy - different - everyone will want the recipe! Here is your line-up…Yellow cake mix (plus 1 stick of butter and 1 egg), a bag of white chocolate chips, sweetened condensed milk, graham crackers and some mini marshmallows. See easy recipe with this pin. My family went crazy over these at our reunion!!! My absolute fav recipe of all!!!!!!!