Spray counter or surface with cooking spray. Combine rolls to form a ball. Roll into a 13-in. x 9-in. rectangle. Spread dressing evenly over dough to within 1/2 in. of edges. Arrange cheese slices over dressing. Sprinkle with sauerkraut, caraway seeds and pepper. Top with corned beef slices. Starting with the long side, roll up jelly-roll style.
Using a serrated knife, cut into 8 slices. Place cut side down on a baking sheet coated with cooking spray. Secure with toothpicks if necessary to keep from unrolling. Cover with plastic wrap coated with cooking spray; let rise 30-45 minutes.
Remove plastic wrap; bake at 350° for 20-25 minutes or until golden brown. Serve warm with additional dressing if desired.
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