How to Make It
Combine butter and mini marshmallows in a heavy bottomed saucepan. Cook over medium high heat, stirring constantly, until marshmallows and butter are melted and well combined.
Add cereal to the pan and stir until well coated. Transfer coated cereal to a lightly-greased baking sheet and press down into pan using a spoon, creating “cobwebs” with the melted marshmallow as you pull the spoon off the bars.
Whisk together remaining ingredients in a small bowl and drizzle over cereal bars.
Refrigerate for 30 minutes before cutting and serving.