Mix together softened cream cheese, thousand island dressing, mayonnaise, and horseradish mustard
Add drained sauerkraut and shredded Swiss cheese to the mixture
Mix well until combined
Chop up deli corned beef and gently fold it into the mixture
Spread the mixture into a small baking dish
Bake at 350°F for about 30 minutes until golden brown and bubbly
Lay cocktail bread on a baking sheet and brush with olive oil
Bake bread for 10 to 15 minutes or until crispy
Serve dip with toasted bread
