5 c. (about 6 med.) peeled and sliced raw potatoes
3 onions, sliced
1/2 c. Cheddar cheese, grated
Salt and pepper to taste
3 tsp. dry mustard
3 tbsp. Parmesan cheese
3 tbsp. flour
3 tbsp. butter
3 c. milk
Paprika

Line bottom of microwavable 3-quart casserole with 1/3 of potatoes and 1/3 of onions. Add salt and pepper, sprinkle on 1 teaspoon mustard, 1 tablespoon cheese, 1 tablespoon flour, and 1/3 of Cheddar. Repeat process twice. Dot with butter, pour on milk. Sprinkle with paprika. Cook 20 minutes on full power and 10 to 15 minutes at half power. Let stand 5 minutes before serving.