01 - Line a 9x13 inch baking sheet with parchment paper, ensuring complete coverage to prevent sticking.
02 - Place white chocolate in a microwave-safe bowl. Microwave in 30-second intervals, stirring thoroughly between each burst, until completely smooth and fully melted. Alternatively, use a double boiler method with a heatproof bowl over simmering water.
03 - Let the melted chocolate cool for 2 minutes to prevent marshmallows from melting completely. Gently fold in the mini marshmallows until evenly distributed throughout the chocolate.
04 - Pour the chocolate-marshmallow mixture onto the prepared baking sheet. Using a spatula, spread into an even layer approximately 1/2 inch thick, working quickly before the chocolate begins to set.
05 - Immediately sprinkle chopped candy eggs and pastel sprinkles over the surface. Press lightly with the spatula to ensure toppings adhere to the chocolate.
06 - Refrigerate the bark for at least 1 hour until completely firm and set throughout. The surface should be hard to the touch when ready.
07 - Break or cut the bark into irregular pieces. Store in an airtight container at room temperature for up to one week, or refrigerate for longer shelf life.