Grease a 10- or 12-inch pizza pan. Arrange 2 pierogies in the center of the 1/2 cup prepared pizza saucepan, straight sides slightly overlapping. Arrange remaining pierogies around center pierogies, in a concentric circle, slightly overlapping, pressing pierogies together to form a complete circle.
Spread pizza sauce on top of pierogies to cover. Sprinkle with cheese and your favorite pizza toppings. Bake 12-15 minutes or until cheese is melted and pierogies are heated through. Serve Pierogy Pizza and enjoy!