Preheat oven to 400F.
In a bowl, combine the cream cheese, sour cream and the dressing together.
Chop the corned beef into chunks or strips.
In a small baking dish (8x8 or small round dish) add in all the ingredients. Lastly, fold in the grated swish cheese. Do not spread it across the top.
Bake for 20-25 minutes so that everything melts together then pull from the oven.
All the dip to cool a bit before serving.