Preheat oven to 350 F.
Transfer potato mixture to a baking dish.
Top with reserved bacon, green onions and cheese.
Bake for 10-15 minutes.
Add bacon, onions and cheese (reserve some of each for top).
Mix with potatoes.
Pour into baking dish.
Top with reserved cheese, onions, and bacon.
Bake 350 for 10-15 minutes (until cheese melts).