1. Heat oven to 450°F.
2. Lightly spray baking sheet with nonstick cooking spray.
3. Arrange potato rounds in single layer on baking sheet.
4. Bake 15-20minutes or until light brown.
5. Remove from oven. Sprinkle with cheese, bacon and green onion.
6. Continue baking for 5 minutes or until cheese melts. Serve with sour cream.