Melt the butter in a large saucepan over medium heat. Add the mini marshmallows and stir until they are fully melted and smooth.

Remove the pan from the heat. Pour in the Rice Krispies cereal and stir quickly until every piece is coated.

Let the mixture cool for one minute, then scoop out portions and shape them into long bone forms with your hands. Place the bones on a parchment-lined baking sheet.

Melt the white chocolate chips in the microwave in short bursts, stirring between each one until smooth. Dip both ends of each bone into the chocolate and return them to the sheet to set.