Potatoes And Ham Au Gratin - cooking recipe

Ingredients

1 1/4 c. melted margarine
1/4 c. all-purpose flour
1/2 tsp. dry mustard
2 1/2 c. milk
1 tsp. salt
1/4 tsp. black pepper
2 c. grated cheese, divided
2 c. chopped, cooked ham
2 Tbsp. chopped onion
6 c. sliced, cooked potatoes

Preparation

Combine margarine, flour and dry mustard; cook over low heat, stirring constantly until bubbly.
Gradually add milk, stirring constantly.
Cook until smooth and thick.
Season sauce with salt and pepper.
Add 1 1/2 cups cheese, stirring until melted.
Stir in ham and onion.
Alternate layers of potatoes and sauce in greased 2-quart baking dish.
Bake for 45 minutes.
Add remaining cheese and bake until cheese is melted.
Serves 6 to 8.