Microbaked Potato and Cheese

I like baked potatoes with cheese but
sometimes don't have the time to do it right.
Here is a quick potato and cheese casserole.

Ingredients:
1 can (10-1/2 oz. size) cheddar cheese soup
1/2 cup milk
1 medium onion, sliced
6 large potatoes (peeled and sliced)
paprika

Directions:
Mix soup and milk together.
Place half of potatoes in 2 qt. casserole,
top with half of onion and half of soup mixture.
Repeat layers and sprinkle with paprika.
Bake in microwave oven for 20 to 25 minutes
or until potatoes are tender.