Loaded Mashed Potato Casserole

Directions

1. 1
   In a large pot, boil potatoes in salted water until fork tender.
2. 2
   Drain well and return the potatoes to the pot. Mash the potatoes with a potato masher.Preheat oven to 350 degrees F.
3. 3
   Add sour cream, butter, milk, salt, pepper, bouillon, garlic salt and garlic powder to the pot of potatoes.
4. 4
   Mix well.Stir in Parmesan cheese, 1 cup cheddar cheese, and half of the bacon.
5. 5
   Pour potatoes into a 9x13 baking dish.
6. 6
   Place in oven at 350 degrees F for 25 minutes.
7. 7
   Remove from oven and top with the remaining cheddar cheese, and bacon.
8. 8
   Bake an additional 5 minutes.
9. 9
   Remove from oven and sprinkle with green onions and serve.