Melt butter in a sauce pan over medium heat,until golden brown and has a nutty aroma,about 5 minutes.add marshmallows to browned butter,reduce heat to medium-low,and cook, stirring occasionally until marshmallows are melted, 3-4 minutes

Stir bourbon and 1 teaspoon sea salt into marshmallow mixture and remove sauce pan from heat add rice cereal to marshmallow mixture and mix until cereal is evenly coated with marshmallow mixture transfer to a 9x13 inch baking pan