01 - Line a standard 12-cup muffin tin with paper cupcake liners or cut parchment paper squares to fit each cup. This prevents sticking and makes removal easier once set.
02 - Place semi-sweet chocolate chips and unsalted butter in a large heatproof bowl. Microwave in 30-second intervals, stirring thoroughly between each burst until completely smooth and glossy. Alternatively, melt over a double boiler, stirring constantly until combined.
03 - Pour the crispy rice cereal and shredded coconut (if using) into the melted chocolate mixture. Fold gently with a spatula until every piece is evenly coated with the chocolate mixture.
04 - Distribute the chocolate-cereal mixture among the prepared muffin cups, using approximately 2 tablespoons per nest. Press the mixture firmly against the sides and bottom with the back of a spoon, creating a distinct well in the center to form the nest shape.
05 - Transfer the muffin tin to the refrigerator and chill for at least 30 minutes, or until the nests are completely firm and hold their shape when touched.
06 - Once fully set, carefully remove each nest from the muffin tin. Gently peel away the paper liners, taking care not to break the delicate nest structure.
07 - Just before serving, arrange jelly beans or candy-coated chocolate eggs in the center well of each nest. The colorful filling should look like eggs resting in a bird's nest.