Bacon Potato Soup

1/2 cup bacon bits (I use precooked real bacon bits from Costco)
2/3 cup margarine
2/3 cup flour
7 cups milk
4 large baked potatoes, peeled and cubed (you can add more depends on the size)
4 green onions, chopped
1 1/4 cups shredded cheddar cheese
1 cup sour cream
1 tsp. salt
1/2 tsp. ground black pepper

In a large saucepan over medium heat, melt butter. Stir in flour and cook about a minute. Whisk in milk, a little at a time, stirring constantly until thickened. Stir in potatoes, salt, pepper, 1/3 cup bacon bits, 2 tablespoons green onions and most of the cheese. Cook until thoroughly heated. Stir in sour cream and heat through. Serve topped with remaining bacon, onions and cheese.

p.s. You can leave out the sour cream if you don't have it on hand, I usually forget to add it--and it still tastes great.