Preheat oven to 350.
Line a 9x9-inch square baking pan with parchment paper or aluminum foil and spray with nonstick spray.
Whisk together flour, baking soda and salt for crust.
Cream together butter, brown sugar and sugar until fluffy.
Add egg and vanilla and whip to incorporate.
Add flour mixture and mix until incorporated.
Fold in chocolate chips.
Press 2/3 of the mixture into the bottom of the prepared pan to form an even layer.
Combine filling ingredients and beat until blended.
Spread filling over the cookie dough layer and level.
Crumble remaining crust dough over the filling layer.
Bake for 40 minutes, or until cheesecake is set and cookie dough has browned.
Allow to cool completely and chill before slicing.
