S'More Cookie Bars Preparation Time: 10 minutes. Cook Time: 25 minutes. Makes 2 dozen bars. 3/4 cup IMPERIAL Spread 3 cups graham cracker crumbs 1 package (6 oz.) semi-sweet chocolate chips (1 cup) 1 cup butterscotch chips 1 cup mini marshmallows 1 can (14 oz.) sweetened condensed milk Directions: Preheat oven to 350 F. In 13x9 inch baking pan, combine IMPERIAL Spread with crumbs, press to form even layer. Evenly sprinkle with chocolate chips, then butterscotch chips, then mini marshmallows. Pour condensed milk evenly over mixture. Bake 25 minutes or until bubbly. On wire rack, let cool completely. To serve, cut into squares. For easier cutting, refrigerate 1 hour.