Preheat oven to 400 degrees.
In a large bowl, combine cream cheese and sour cream until smooth.
Add corn, chiles, Mrs. Dash, cayenne pepper and 1 3/4 cups shredded cheese until well blended.
Pour into a deep dish pie plate or a baking dish large enough to hold mixture. Sprinkle top with remaining cheese.
Bake for 20 minutes, until bubbly and lightly browned on top.
Serve with tortilla chips and/or crackers.