Chewy Chocolate Sandwich Cookies with Marshmallow Filling October 14, 2011 Angry Baker Staff 0 Chewy Chocolate Sandwich Cookies with Marshmallow Filling Rich, indulgent and oh so good…. these chewy chocolate cookies sandwich a fluffy marshmallow filling. Forget Oreos… eat these! Chewy Chocolate Cookies with Marshmallow Filling Recipe… Read more White Mountain Frosting Recipe