Carefully slice the hollow chocolate eggs in half using a warm, serrated knife to prevent cracking. Aim for even halves and set them aside on a parchment-lined tray, ensuring they're stable and ready for filling.

In a mixing bowl, combine crushed graham crackers or digestive biscuits with melted butter. Stir until the mixture resembles wet sand and holds together when squeezed.

Firmly press the cookie mixture into the bottom of each chocolate egg half, creating a solid layer. Refrigerate the chocolate egg halves for 15 minutes to firm up the crust.

In a large bowl, beat together softened cream cheese, powdered sugar, and vanilla extract until smooth and creamy. In another bowl, whip the heavy cream until stiff peaks form, then gently fold it into the cream cheese mixture.

Using a spoon or piping bag, carefully fill each chocolate egg half with the cheesecake filling. Make sure to leave a little space at the top for decorations.

Drizzle melted chocolate over the filled Easter Egg Cheesecakes and add mini chocolate eggs for a festive touch. Place the decorated cheesecakes back in the refrigerator for at least 2 hours to set properly.