Cristina Ferrare, cookbook author and host of the Hallmark Channel’s two-time Emmy-nominated show Home & Family, loves summer entertaining and creating new recipes to share with family and friends. Her S’mores Cookie Bars offer all of the gooey goodness of the campfire classic, but can be made as a large batch in the oven, rather than as a single serving.
Preheat oven to 350 degrees F. Grease an 8-inch square baking pan.
In a large bowl, cream together butter and sugars for two minutes. Beat in egg and vanilla until incorporated.
In a small bowl, whisk together flour, graham cracker crumbs, baking powder, and salt. Add to butter mixture and mix at a low speed until combined.
Divide dough in half and press half of dough into an even layer on the bottom of the prepared pan and take the other half of dough and flatten on parchment paper, place in the refrigerator for about 10 minutes. This will make it easier to work with. Take the chocolate bars and place over the dough. Break the chocolate (if necessary) to fit in a single layer about a 1/4 inch thick. Using a metal spatula, spread marshmallow fluff evenly over the chocolate layer.
Place remaining dough in a single layer on top of the fluff and use your hands to flatten it out.
Bake for 30 to 35 minutes, until lightly browned. Cool completely before cutting into bars.