Today, Morgan Bolling is bringing campfire nostalgia straight to your kitchen with a recipe for the ultimate s'mores bar cookie! Morgan shares her best tips on how to get perfect layers of crunchy graham cracker, creamy chocolate, and fluffy marshmallow in every bite. S'Mores Bars Recipe: cooks.io/4s2DKqS Buy The New Cookie: Creative Takes on the Classics You Love: cooks.io/4yKybzj Subscribe to America's Test Kitchen: youtube.com/@AmericasTestKitchen?sub_confirmation=1 ​ Watch full episodes of America's Test Kitchen and Cook's Country for free on our new YouTube channel: youtube.com/@ATKFullEpisodes Get exclusive access to every recipe, review, and more via our homepage: cooks.io/4zxmk8g Sign up for our free newsletters to receive more delicious recipes, cooking tips, and exclusive content: cooks.io/3VHwGE8 Subscribe to Cook's Illustrated: cooks.io/4dBbENx Watch More! ​ In The Test Kitchen: youtube.com/watch?v=eLxu...