Baked Potato Soup

4 large baked potatoes
2/3 cup butter
2/3 cup flour
6 cups milk (the recipe says whole or 2%, but I used fat free and it was fine)
3/4 tsp salt
1/2 tsp pepper
4 green onions, chopped
12 slices bacon, fried and crumbled (I save time and use the already cooked bacon pieces you can buy in a bag)
2 cups shredded cheddar cheese
1 cup (8 oz.) sour cream

Cut potatoes (already baked) in half, scoop out pulp, and put in bowl. Melt butter in large pot, add flour, and gradually stir in milk. Make sure you keep stirring it and don't have the heat too high or else it will burn. Continue to stir until smooth, thickened, and bubbly. Stir in potato pulp, salt, pepper, and 3/4 of onions, bacon, and cheese. Cook until heated through. Stir in sour cream. When serving, top with remaining onions, bacon, and cheese.