Begin by placing 1 cup of white chocolate and 1 tablespoon of vegetable shortening in a microwave-safe bowl. Heat the mixture in the microwave at medium power for 30 seconds, then stir. Repeat this process until melted and smooth, which should take about 1-2 minutes total.

Take a large marshmallow and dip the bottom into the melted white chocolate. Immediately attach it to a baking sheet lined with parchment paper. For the iconic Stay Puft shape, add two more marshmallows on top, using the melted chocolate to adhere them. Allow this base structure to set slightly at room temperature for about 5 minutes.

Once your marshmallow base has firmed up, drench the entire marshmallow figure in the remaining melted white chocolate, ensuring a generous layer for that smooth look. While the chocolate is still wet, place two candy eyes on top.

After decorating with candy eyes, let your marshmallow figures sit at room temperature for about 10-15 minutes to harden completely.

Once the chocolate is hard, dust them with ¼ cup of powdered sugar to enhance their visual appeal.

Using the black edible marker, carefully draw a cheerful smile on each marshmallow figure to personalize them.