Potato Soup using Mashed Potatoes

Description
Contributed by Catsrecipes Y-Group

Ingredients

 * 1 tablespoon butter
 * 1 large onion
 * 6 cups mashed potatoes
 * 2 (14.5 ounce) cans chicken broth
 * ½ cup milk

Directions

 * 1) In a medium soup pot melt butter over low heat, and saute onions until tender.
 * 2) Stir in the mashed potatoes, and then slowly add the chicken broth.
 * 3) Stirring, add milk (use more or less to achieve desired creaminess).
 * 4) Cook until heated through and season with salt and pepper to taste.