1. Heat oven to 350 F. Grease 13x9x2-inch baking pan. 2. In large bowl, beat butter. Add sugar; beat on medium speed of electric mixer until light and fluffy. Blend in egg and vanilla. Stir in graham cracker crumbs, flour and salt. 3. Set aside 2-1/2 cups graham cracker crumb mixture. Press remaining mixture into bottom of prepared pan. Place candy bars, side by side, breaking to fit, if necessary, on top of mixture in pan. Sprinkle marshmallows evenly on top of chocolate bars in pan. Crumble reserved graham cracker crumb mixture on top of marshmallows. 4. Bake 30 minutes. Cool 10 minutes in pan on wire rack. Cut into bars; cool completely. About 24 bars. Hersheys is a registered trademark of Hershey Foods Corporation. Recipe may be reprinted courtesy of the Hershey Kitchens. Meal-Master format by Karen Mintzias File ftp://ftp.idiscover.co.uk/pub/food/mealmaster/recipes/hershey3.zip