Preheat oven to 425°F. Spread 2 teaspoons dressing on each bread slice; cut slices into quarters. Place bread pieces in a single layer on 2 baking sheets. Bake 9 to 11 minutes or until bread is lightly toasted, rotating baking sheets half way through baking.
Meanwhile, cut cheese slices into quarters; cut each quarter diagonally in half to form 32 triangles. Top bread pieces evenly with Corned Beef, cheese slices and sauerkraut.
Heat appetizers in 425°F oven 3 to 5 minutes or until cheese is melted. Top evenly with remaining Thousand Island dressing.
Nutrition information per serving: 262 Calories; 126.9 kcal Calories from fat; 14.1 g Total Fat; 4.7 g Saturated Fat; 0.1 g Trans Fat; 3.4 g Polyunsaturated Fat; 4.3 g Monounsaturated Fat; 48 mg Cholesterol; 840 mg Sodium; 19 g Total Carbohydrate; 0.5 g Dietary Fiber; 4 g Total Sugars; 16 g Protein; 0 g Added Sugars; 156 mg Calcium; 2.5 mg Iron; 111 mg Potassium; 0 IU Vitamin D; 0.2 mg Riboflavin; 1.3 mg Niacin; 0.1 mg Vitamin B6; 0.4 mcg Vitamin B12; 128 mg Phosphorus; 1.1 mg Zinc; 14.4 mcg Selenium; 9.4 mg Choline;