In large bowl, beat butter, granulated sugar, brown sugar, and vanilla until light and fluffy. Add eggs, one at a time, beating well.
Gradually add flour, salt, and baking soda, beating until well blended. Stir in chocolate chips and nuts.
Spread in greased 14 inch round pizza pan. Bake at 375 degrees F (190 degrees C) for 20 minutes. Cool cookie in pan on a cooling rack. Decorate as desired.