Line a 9x13-inch baking dish with parchment paper or lightly grease it to prevent sticking.
In a large saucepan over medium heat, combine the sugar, heavy cream, butter, and a pinch of salt. Stir continuously until the mixture reaches a boil.
Let it boil for 4-5 minutes, stirring constantly to prevent scorching.
Remove from heat and immediately stir in the white chocolate chips and marshmallow cream, mixing until completely smooth.
Let the mixture cool slightly before gently folding in the pastel M&Ms.
Pour the mixture into the prepared baking dish and smooth the top with a spatula.
Press the Hershey chocolate eggs onto the surface and sprinkle the top with festive sprinkles.
Allow the fudge to set at room temperature for 30 minutes, then refrigerate for at least 2 hours until fully firm.
Once set, slice into squares and enjoy!