Prepare your baking tray by lining it with parchment paper.
In a microwave-safe bowl, add the semi-sweet chocolate chips and heat in the microwave in 30-second intervals, stirring in between until melted and smooth.
Add the vanilla extract to the melted chocolate and stir well.
In a mixing bowl, combine the mini marshmallows, crushed graham crackers, and chopped nuts (if using). Mix until evenly coated with chocolate.
Spoon the mixture onto the prepared baking tray, shaping them into small nests or balls. Leave some space between each piece.
Decorate each treat with the chocolate eggs or candies, pressing them lightly into the chocolate mixture.
Refrigerate the tray for about 10 minutes or until the chocolate is set.
Once set, remove the chocolate treats from the tray and serve on a platter.
For an extra layer of flavor, consider adding a pinch of sea salt on top of the treats before refrigerating.
These chocolate treats can be stored in an airtight container at room temperature for up to one week.