In a food processor, mix all ingredients, except the wontons and the egg.
Preheat the oven to 375 degrees F.
Place approximately 1 teaspoon of the cream cheese mixture in the center of wonton wrappers. Moisten wrapper edges with a small amount of egg, fold over the mixture and pinch to seal.
Bake the wontons for about 15 minutes, or until golden brown.
Serve with plum sauce or sweet and sour sauce for dipping.
I have found wonton wrappers at both Safeway and Walmart, but I prefer the ones from Safeway. They are about the same price, and the Safeway ones are thinner and taste better (in my opinion).
You can also make these ahead and freeze them: Make the filling and seal the wontons. Place them (unbaked) on a baking sheet and stick the sheet in the freezer, until the wontons are frozen. Take the wontons off the baking sheet and put them in a Ziploc freezer bag (this way they won't stick together). When ready to bake, take as many as you need from the freezer, lightly grease a baking sheet, and bake as directed.