chocolate-toffee s'more cookies

Ingredients

• 1 1/2 cups all purpose flour
• 1/2 cup unsweetened cocoa powder
• 3/4 teaspoon baking soda
• 1/2 teaspoon salt
• 1 stick butter, softened
• 1/4 cup shortening
• 1/2 cup sugar
• 1/2 cup packed brown sugar
• 1 large egg , lightly beaten
• 1 teaspoon vanilla extract
• 1 - 8 oz pkg toffee baking bits
• TOPPING
• 1/4 cup graham wafer crumbs
• 1 cup mini marshmallows
• 1/4 cup sweetened condensed milk