Here are two great things about HERSHEY'S Chewy S’mores Bars. One, you don’t need a campfire, so you can celebrate the great "indoors" for a change. And two, your guests can enjoy summer s’mores goodness any time of the year. These s'mores bars start with a graham cracker crumb base, then are topped with chopped HERSHEY'S Milk Chocolate Bars, mini marshmallows and marshmallow creme.
Heat convection oven to 300°F (standard oven: 350°F). Lightly spray one 18x26-inch full sheet pan with vegetable cooking spray. Place parchment paper on prepared sheet pan.
Mix butter and sugar in 20 qt. bowl of mixer fitted with paddle attachment until creamy. Add eggs and vanilla, mixing until fully incorporated. Blend together flour, graham cracker crumbs, baking powder and salt in large bowl. Gradually add to butter mixture, mixing until well blended. Press dough into prepared pan. Bake 15 minutes.*
Meanwhile prepare S'MORE TOPPING: Carefully mix together graham cracker pieces, Chopped HERSHEY'S Milk Chocolate Bars, miniature marshmallows and marshmallow creme in large bowl. Evenly spread topping mixture over partially baked cookie crust. Bake additional 15 to 20 minutes* or until marshmallows are lightly browned. Cool completely in pan on wire rack. Using hot knife, cut into 3-inch bars. Store covered at room temperature.
Step 2: If using convection oven, rotate pan one-half turn (180°) after 7 minutes of baking.