This is one of my favorite things at Crystal Palace, I found the recipe on AllEars.
Yield: 6 servings
1/4 teaspoon Garlic Salt
1/4 teaspoon White Pepper
1/2 teaspoon Salt
3 cups Milk
1 cup Cheddar Cheese - mild, shredded
4 cups Potatoes - diced and cooked (I used the hashbrowns in a bag)
1/2 cup Flour
1/2 cup Onions - diced
1/4 cup Butter - melted
Dice and cook the potatoes, dice the onions and gather the remaining ingredients. Melt butter in a medium saucepan. Add onions and sauté about 2 minutes. Cook an additional 2 minutes. Add flour, stir to make a paste, called a roux. Cook the roux for about 5 minutes stirring constantly. Add 3 cups milk stirring until all lumps are gone. Cook mixture for 10 minutes while stirring. Add potatoes, cheese and seasonings. Mix until cheese is melted.
You may refrigerate at this point until ready to use.
Place in pre-heated oven at 350 for approximately 10 minutes.
This was pretty good, but I think it could have used another cup of potatoes.