Scalloped Potatoes

Picture coming soon, we love these potatoes!  Best thing is no cream of whatever soup.

4 cups of thinly sliced potatoes
3 T butter
3 T flour
1 1/2 cups milk
1 tsp salt
1 cup of grated sharp cheddar cheese
1/2 grated cheddar cheese to sprinkle on top
salt and pepper
grated parmesan cheese to sprinkle on top

In a sauce pan melt the butter then stir in the flour.  Add all of the milk, salt and pepper to taste.  Cook it until thickened and bubbly, whisking constantly.  Reduce heat and add a cup of cheese. Stir the sauce until all the cheese is completely melted. Line the bottom of a greased casserole dish with half of the potatoes.  Sprinkle salt and pepper over it all to taste.  Spread half of cheese sauce then repeat with potatoes, salt, pepper and cheese sauce.  Sprinkle parmesan and cheddar over the top. Bake uncovered for about an hour at 350 degrees.  If you want to bake this in a 9 x 13 casserole dish, you'll need to double it.  This is for a smaller casserole dish as it is written.