In a medium bowl, combine graham cracker crumbs and melted butter until evenly moist. Press the mixture firmly into the bottom of a 9x13 inch baking dish.
In a large bowl, beat the softened cream cheese with sugar and vanilla extract until smooth. Add eggs one at a time, mixing well after each addition.
Fold in 1 cup of mini chocolate chips into the cheesecake batter. Pour the batter over the prepared crust and spread evenly.
Sprinkle the remaining 0.5 cups of mini chocolate chips evenly on top of the batter.
Bake for 40-45 minutes, or until the center is set. Allow to cool at room temperature, then refrigerate for at least 2 hours before slicing into bars.
Notes
Try adding a drizzle of caramel sauce for extra sweetness!