Preheat the oven to 325?F (160?C). In a mixing bowl, combine graham cracker crumbs, sugar, and melted butter. Mix until well combined.

Press the mixture firmly into the bottom of a 9x13 inch baking pan. Bake for 10 minutes, then remove from oven and let cool.

In a large mixing bowl, beat the softened cream cheese until smooth. Add sugar and vanilla extract, and mix until combined.

Add eggs one at a time, mixing well after each addition. Stir in sour cream and chopped chocolate eggs until evenly distributed.

Pour the filling over the cooled crust and spread evenly. Bake for 25-30 minutes, or until the center is set and slightly jiggles.

Remove from oven and let cool to room temperature, then refrigerate for at least 2 hours before cutting into bars.