01 - 
                In a large bowl, mix together the Krispie cereal, crushed Oreo cookies and one cup of mini marshmallows.
              
              
              
                02 - 
                In a large saucepan over medium heat, melt the butter completely.
              
              
              
                03 - 
                Add the remaining 8 cups of mini marshmallows and salt to the melted butter. Stir continuously over medium heat until the marshmallows are completely melted and incorporated with the butter, creating a smooth mixture.
              
              
              
                04 - 
                Pour the melted butter and marshmallow mixture over the Krispie cereal mixture. Using a rubber spatula, gently fold everything together until the cereal and Oreos are evenly coated with the marshmallow mixture.
              
              
              
                05 - 
                Transfer the Oreo Krispie mixture into a 9-inch square pan. Using the spatula, press gently to flatten the top and create an even surface. Don't press too hard or the treats will become dense.
              
              
              
                06 - 
                Allow the Oreo Krispies to cool in the pan for about 30 minutes before slicing into squares and serving.