Mud Hen Bars Mud Hen Bars. It's a cookie bottom, chocolate chip and mini marshmallow middle with a brown sugar meringue on top! Find a Recipes By Ingredients Share : You may like these posts :Baked Tomatoes with Mozzarella and ParmesanBest Vegan Sloppy Joes (made in about 20 minutes)Classic Cream PuffsVegan Spicy Thai Peanut Ramen