This layered cheesy potato side dish is always a favorite at family dinners.
In a small saucepan, melt 2 tablespoons butter over medium heat. Stir in flour, salt and pepper. Add whipping cream all at once. Cook and stir over medium heat till thickened and bubbly. Stir in Parmesan cheese (mixture will be thick).
Arrange half the potatoes in overlapping slices along the bottom of a buttered 2-quart shallow casserole or baking dish. Spread half the sauce over the potatoes. Repeat potato and sauce layers.
Bake, covered, in a 325° oven for 40 minutes. Uncover and bake for 25 to 35 minutes more, until edges are brown and potatoes are tender when pierced with a knife. If desired, sprinkle with snipped chives before serving.