Christmas Morning Breakfast Casserole

1 (5.5 ounce) box Idahoan(R) Steakhouse Cheesy Hashbrowns
1/2 cup buttermilk
1 cup sliced bacon, diced
1 small onion, diced
3 eggs, beaten
1/2 cup Swiss cheese, shredded

Preheat oven to 450 degrees F.
Prepare Idahoan Steakhouse Cheesy Hashbrown Potatoes, following packaging directions, replacing the 1/2 cup milk with 1/2 cup buttermilk.
In a medium size skillet, cook bacon and onion until bacon is crisp. Drain and set aside to cool slightly.
Stir in eggs, Swiss cheese, and bacon-onion mixture.
Bake uncovered for 25 minutes.
Sprinkle crunchy onion topping on top of potatoes. Let stand 5 minutes then serve.