Preheat the oven to 350 degrees F.
In a large bowl, cream together shortening, brown sugar, and sugar.
Beat in the 3 eggs one at a time, then stir in the vanilla.
Combine the flour, baking soda, and salt; blend into the sugar mixture.
Stir in chocolate chips, and set aside
In a separate bowl, mix together the cream cheese and 1/4 cup sugar.
Mix in the 2 remaining eggs.
Spread 1/2 of chocolate chip dough in the bottom of a greased 9 x 13 inch pan.
Pour cream cheese batter on top of dough.
Drop pieces of the remaining chocolate chip batter over filling.
Don't worry if there are gaps (the batter will spread)
Bake for 45 minutes or until lightly browned on the top.
Let them cool completely before cutting into bars.