Homemade potato soup

I have been wanting to make homemade potato soup for a while now, and I finally did it!  I remember watching my mother make potato soup, so I just started with that, then added my own touches.

I first sautéed celery and onions (blended) in butter.  I have one daughter who is not fond of onions, so I blended them in order to get the taste, but not the chunks of onions.  I peeled, diced, and boiled potatoes at the same time.  Once the celery was almost done, I added a can of chicken broth and brought it to a boil until the vegetables were tender.  I added mashed potatoes (from Costco), milk, and the cooked, diced potatoes.

I then seasoned with salt and pepper.  Once it was done, I added grated cheese just long enough to melt before serving.  I LOVED it.  Taking it for lunch tomorrow!