Spray counter lightly with non-stick cooking spray. Combine rolls into a ball and roll into a 9x13-inch rectangle. Spread dressing evenly over dough. Arrange cheese slices evenly over dressing.
Sprinkle with sauerkraut, caraway seeds and pepper. Top with corned beef slices. Starting from a long side, roll up jelly-roll style.
Using a serrated knife, cut into 8 slices. Place cut side up on a sprayed baking sheet (if they start to unroll, secure with toothpicks).
Cover with sprayed plastic wrap and let rise 30-45 minutes.
Remove wrap and bake at 350°F 20-25 minutes. Serve warm with extra dressing for dipping, if desired.