01 - 
                Set your oven to 350°F and melt the butter in the microwave for about 40 seconds.
              
              
              
                02 - 
                Blend the warm butter with both sugars until smooth. Next, mix in the vanilla extract and egg.
              
              
              
                03 - 
                Stir in the flour, salt, and baking soda just until the dough comes together. It should feel soft but not super sticky.
              
              
              
                04 - 
                Carefully fold the chocolate chips, marshmallow pieces, and graham crumbs into the dough.
              
              
              
                05 - 
                Spoon about 3 tablespoons of dough per cookie, place them 2 inches apart on the sheet, and bake for 10-15 minutes until they look set but fluffy.