Chocolate Chip Cheesecake Bars

I made these bars for Christmas Eve and I loved them! I love cheesecake and chocolate chip cookies, so this recipe is a perfect combo! It's also simple to make. The original recipe is from Betty Crocker.

1/2	cup butter, softened
1	pouch (1 lb 1.5 oz) Betty Crocker  chocolate chip cookie mix
1	egg
2	packages (8 oz each) cream cheese, softened
1	cup sugar
2	eggs
1	teaspoon vanilla

 Make the cookie dough as directed. Press 2/3 of dough into the bottom of an un-greased 11X7 pan. Beat cream cheese, eggs, sugar and vanilla till smooth. Pour over cookie dough mixture. Drop remaining dough by spoonfuls onto the top of the cream cheese. Bake at 350 for about 25 minutes. Cool and refrigerate for at least 2 hours.