I searched through 215 disks for this recipe.  It's that good.

1/2	c.	onion, chopped
1/4	c.	butter
2	tbsp.	flour
1	tsp.	salt
1/2	tsp.	black pepper
2	c.	water
2	cans	sliced mushrooms, drained (4 oz. each) - fresh can be used
1	c.	celery, chopped
2	c.	potatoes, peeled and diced
1	c.	carrot, chopped
2	c.	milk
1/4	c.	Parmesan cheese, grated

In a skillet, sauté onion and celery in the1/4 cup margarine until the onion is translucent.  Remove from heat.  Add flour, salt and pepper; stir.

Place in Crockery Pot.  Add water, then stir in potatoes, mushrooms, and carrots.  cover and cook on low 6-8 hours (or on high for 3-4 hours).  If on low, turn to high after cooking time.  Add milk and parmesan cheese and cook another 30 minutes.  Serve.