Soften the cream cheese. Drain the spinach, and then press down on the spinach to remove any excess moisture. Then add the mayonnaise, sour cream, green onions, and the dry soup mixture to the bowl of cream cheese, mix well. Add the chopped chestnuts, and mix until smooth. I used an eight-inch round loaf of French bread today because it was cheaper than the sourdough round loaf. It works okay, although I like the sturdier sourdough loaves. You basically cut out the top on an angle, remove some of the bread inside the round loaf, and set it aside.
This recipe is similar to the Knorr package.