Potato Soup

3 medium potatoes
1 Tablespoon margarine
3 cloves garlic
1/2 onion
1/2 cup water
1 1/2 cups chicken broth
1/2 cup whole milk
cheese on top

Peel and dice potatoes.
Brown in margarine with the minced garlic.
Stir in chopped onion.
Stir in broth and water.
Bring to a boil and simmer until potatoes are very tender.
Set aside 1/4 cup potatoes.
Blend remaining potatoes until very smooth.
Stir in milk, salt, and pepper to taste.
Stir in reserved potatoes.
Top with slices of cheddar cheese.