Saucy Ham And Potato Bake
["2 Tbls. chopped onion", "1/4 c. butter or margarine", "1/4 c. flour", "1 tsp. salt", "1/2 tsp. dry mustard", "dash of pepper", "1 1/2 c. milk", "2 c. shredded mild cheddar cheese", "1/2 lb. ham, cut into 1/8-inch slices", "6 c. cooked potatoes sliced"]
["Saute onion in butter, blend in flour and seasonings. Gradually add milk, cook, stirring constantly until thickened. Add 1 1/2 c. cheese; stir until melted. Toss potatoes in cheese sauce. Reserving 1 cup of potatoes. Pour into 2 qt. casserole dish. Arrange ham and reserved potatoes on top of casserole, top with remaining cheese. Bake 350\u00b0 for 30 minutes."]
["onion", "butter", "flour", "salt", "dry mustard", "pepper", "milk", "cheddar cheese", "ham", "potatoes"]