Heat a large pan over medium heat. First of all, add the butter and marshmallows and stir until melted. Add the salt, stir and remove from heat.
Next, add the cereal and dried raspberries. (I crushed my raspberries first for smaller pieces) Stir well and pour into baking pan. Grease hands with non-stick spray or butter and press the cookies until even.
Sprinkle dark chocolate chips over top of cookies. Put the baking dish under the broiler for a minute or two. Remove from oven. You should be able to easily spread the melting chocolate over the cookies.
Mix the powdered sugar with a small amount of milk. Start with about 1 tablespoon. Drizzle over the top of the cookies. Let cool completely before serving.