Ingredients

3-1/2 teaspoons butter, divided1 tablespoon all-purpose flour1/4 teaspoon saltDash pepper3/4 cup milk1 cup sliced peeled potatoes1 tablespoon finely chopped onion

Preparation

In a saucepan over medium heat, melt 3 teaspoons of butter. Stir in flour, salt and pepper until smooth. Gradually add milk. Bring to a boil; cook and stir for 2 minutes or until thickened and bubbly. Place half of the potatoes in a greased 2-cup baking dish; top with the onion and half of the sauce. Layer with remaining potatoes and sauce. Dot with remaining butter. Cover and bake at 350° for 30 minutes. Uncover; bake 30-40 minutes longer or until potatoes are tender.