Preheat oven to 375°F.
Lightly grease two 12 inch pizza pans.
Cream butter, sugars cream cheese and vanilla in a large bowl.
Add eggs; beat until light.
Combine flour, baking soda and salt in a small bowl.
Add to creamed mixture; blend well.
Stir in chocolate chips and nuts.
Divide dough in half; press each half evenly into a prepared pan.
Bake 20 to 25 minutes or until lightly browned around edges.
Cool completely in pans on wire racks.
Cut into wedges to serve.