Preheat your oven to 400°F.
In a large mixing bowl, beat your cream cheese until it's smooth.
Add the chopped corned beef, shredded Swiss cheese, sauerkraut, sour cream, and Thousand Island dressing. Mix everything together until well combined.
Spray a small baking dish or pie plate with non-stick spray, then spread the dip mixture into the pan.
Pop the dish into the oven for 15-20 minutes. The dip is ready when the cheese is all melty and bubbly, with a few golden brown spots forming on top.
Once it’s done, sprinkle some green onions on top (if you like a little extra flavor and color), and serve with Triscuits, your favorite crackers, or crusty bread.