- 3 lbs (1,3 kg) russet potatoes, peeled (or a bag of frozen cubed hash brown potatoes)
- 4 tbsp butter, divided
- 1/2 cup yellow onion, diced small
- 2 garlic cloves, minced
- 2 1/2 tbsp flour
- 1/2 cup chicken broth
- 1/2 cup whole milk
- 1 cup sour cream
- 3 green onions, sliced
- 3/4 tsp salt
- 1/2 tsp black pepper
- 2 cups grated sharp Colby or cheddar cheese
“Optional” corn flake topping
- 2 cups corn flakes
- 1/2 stick butter