Bavarian Beef Sandwiches

1 pkg. (8 oz.) cream cheese, softened
1/4 cup sour cream
2 TB prepared horseradish
12 slices rye bread OR
6 Hoagie buns OR
6 burger buns
Lettuce leaves
Cooked roast beef, thinly sliced
6 to 12 Swiss cheese slices, optional
6 red onion slices

Combine cream cheese, sour cream, and horseradish, mixing until well blended.

For each sandwich, spread bread with the cream cheese mixture, add the meat, lettuce and onions. Add additional cream cheese spread if desired. Makes: 6 sandwiches.