Cheesy Potato Soup

1 T. Butter
3 c. Onion
8 c. Potatoes, Diced
9 c. Broth, Chicken or Vegetable
3 c. Fat-free Half and Half
4 1/2 c. Cheddar, Shredded
1 1/2 t. Dill Weed
1 1/2 t. Black Pepper
1 1/2 t. Salt

Peel and dice the potatoes and onions.  Saute onions in the butter until soft.  Add onions, potatoes, chicken broth, dill weed, salt, pepper and simmer until the potatoes are soft.  Use an immersion blender to blend until smooth.  Add the cheese, half and half and stir until melted.