Hot French Onion Dip

1 envelop onion soup mix 2 cups (16 oz) sour cream 2 cups shredded Swiss cheese (8 oz) 1/4 cup best foods mayonnaise

Preheat oven to 375. In 1 quart casserole, combine soup mix, sour cream, 1 3/4 cup Swiss cheese and mayonnaise. Bake uncovered 20 minutes or until heated through. Sprinkle with remaining 1/4 cup cheese. Serve, if desired, with sliced French bread or your favorite dippers. Make 2 cups dip. Source: Unknown