Scalloped Potatoes

12 potatoes , peeled and thinly sliced 2 onions , finely chopped salt and pepper 1/3 cup butter 1/3 cup all-purpose flour 3 cups boiling chicken stock paprika[...]

3 teaspoons butter 2 teaspoons flour, all-purpose 2 teaspoons salt 2 teaspoons black pepper 3 cups milk 6 medium potatoes pared and thinly slicked 2 teaspoons[...]