I found this recipe at Very Best Baking by Nestlé.
The filling ingredients for one pie are:
1/2 cup flour
1/2 cup white sugar
1/2 cup brown sugar
3/4 cup butter, softened
1 cup semi-sweet chocolate chips
1 cup walnuts ( I left these out since not all our kiddos like nuts.)
You will also need an unbaked pie crust (I use My Favorite Pie Crust), and some good vanilla ice cream is strongly suggested.
Beat the eggs till light and fluffy. Add the flour, white sugar, and brown sugar, and mix well. Add the softened butter, and mix thoroughly. Stir in the chocolate chips (and walnuts if using) till spread evenly throughout the filling. It will be very cookie dough like, but not quite as stiff.
Spread the filling evenly in the pie crust. Bake at 325° F for 50 to 60 minutes.
Remove from oven, and let cool for about 30 minutes before serving warm with a scoop of vanilla ice cream.
My notes: It turned out fabulously yummy. And the scoop of vanilla ice cream puts it over the top!