Preheat the oven to 350°F (175°C). In a mixing bowl, combine graham cracker crumbs, sugar, and melted butter. Mix well.

Press the mixture into the bottom of a muffin tin to form the crust.

In another bowl, beat the cream cheese until smooth. Add sugar and vanilla extract, mixing until combined.

Add eggs one at a time, mixing well after each addition. Stir in melted chocolate chips.

Pour the filling over the crust in the muffin tin. Bake for 20 minutes or until set.

Let cool before removing from the tin and refrigerating for at least 2 hours.