In a small bowl, whisk together the mayo, ketchup, relish, horseradish, Worcestershire, salt and pepper to make the dressing. Chill until ready to use.
In a large skillet over medium-high heat, heat butter. Add corned beef or pastrami and cook until browned, 5 minutes. Add coleslaw mix and cook until tender but crisp, 5 minutes. Stir in sauerkraut, and green onion, season with salt and pepper and top with Swiss cheese.
Cover and let cook until cheese is melted and bubbly, about 3 minutes.
Drizzle with dressing, top with green onion and caraway seeds and enjoy!
Source:
12tomatoes.com