01 - Line a 9x13 inch baking sheet with parchment paper.
02 - Place white chocolate in a microwave-safe bowl. Microwave in 30-second intervals, stirring thoroughly between each burst, until completely smooth and melted. Alternatively, melt over a double boiler using simmering water.
03 - Let melted chocolate cool for 2 minutes. Gently fold in the mini marshmallows until evenly distributed.
04 - Pour the chocolate-marshmallow mixture onto the prepared baking sheet. Use a spatula to spread into an even layer approximately ½ inch thick.
05 - Sprinkle chopped candy eggs and pastel sprinkles over the surface. Press lightly into the chocolate to adhere.
06 - Refrigerate for at least 1 hour until completely firm and set.
07 - Break or cut into irregular pieces and serve.