Baked Potato Soup

8 large potatoes
2/3 c. margarine
2/3 c. flour
6 c. milk (up to 2 more for desired consistency)
3/4 t. salt
1/2 t. pepper
4 chopped green onions
12 slices bacon, cooked crisp and chopped
1 1/4 c. shredded cheddar cheese
1 c. sour cream

Bake potatoes and cool. Peel, mash, and out in bowl. Melt margarine in pan. Stir in flour until blended. Cook 1 minute stirring constantly. Gradually stir in milk and cook over medium heat until thick. Stir constantly. Add potatoes, salt, pepper, 1/2 of onions, and bacon. Cook until heated through. Stir in sour cream. Add more milk if desired. Top with cheese, onion, and bacon.