½ stick unsalted butter
2 ½ lbs red potatoes, peeled and sliced ¼" thick
1 ½ tsp salt
1 tsp pepper
2 Tbs plus 2 tsp flour
½ lb sharp cheddar cheese, grated
½ lb Monterey Jack cheese, grated
½ lb Gruyere cheese, optional
2 cups milk
Preheat oven to 350º. Grease a 2 qt baking dish.
Put potatoes in large mixing bowl and add salt and pepper. Toss. Arrange layer of potatoes on bottom of dish. Sprinkle with 1 tsp flour. Dot with a tbs of butter. Sprinkle with ½ cup of each cheese. Repeat layers. Pour in milk and bake about 1 hour.
Note:
You can add some cut up ham between layers, if desired.