1. Preheat oven to 325 degrees. Spray a 9-inch tart pan with a removable bottom or a 9-inch pie tin with vegetable-oil cooking spray; set aside. In a small bowl, whisk together the flour and baking soda; set aside. In the bowl of an electric mixer fitted with the paddle attachment, combine the butter with both sugars; beat on medium speed until light and fluffy. Reduce speed to low; add the salt, vanilla, and eggs. Beat until well mixed, about 1 minute. Add flour mixture; mix until just combined. Stir in the chocolate chips.

2. Press 3 cups of this dough into prepared pan. Bake until edges are golden and center is almost set, 40 to 45 minutes. Let cool at least 20 minutes, and remove from pan. Bake remaining dough as cookies at 350 degrees for 8 to 10 minutes.