Prepare the Crust: In a medium bowl, combine flour, sugar, and salt. Melt the butter and mix into the dry ingredients until coarse crumbs form. Press into a greased 9x13-inch pan and bake at 350°F for 10 minutes until golden.

Make the Custard: Beat cream cheese until smooth, add powdered sugar, then incorporate eggs one at a time. Whisk in vanilla extract and heavy cream until uniform.

Bake the Custard: Pour custard over the warm crust and bake for 30-35 minutes until set and slightly jiggly in the center.

Prepare the Glaze: Melt chocolate chips with a tablespoon of butter in the microwave until glossy. Drizzle over cooled bars.

Cool and Slice: Let the bars set for 30 minutes at room temperature, then chill in the refrigerator for at least an hour before slicing.