Baked Potato Soup

I got this recipe from a friend and it was soooooo good!

4lg baking potatoes (I used 5 lg of yukon gold)
1/2-1lb bacon slices
2/3c butter
2/3c flour
6c milk
3/4tsp salt
1/2tsp pepper
1-2 onions, finely chopped
5oz shredded cheddar cheese
8oz sour cream

Preheat oven to 400 degrees. Wash and prick potatoes, wrap in foil and bake 1 hour or until soft when squeezed. Cool slightly. Cook bacon and crumble. Melt butter in a large pot on low heat. Add flour, stir constantly 1 min until smooth. Whisk in milk and cook over medium heat, stirring 5-10 min constantly until thick and bubbly. Cut potatoes in cubes and scoop into mix. Add salt, pepper, onions, bacon, and cheddar. Cook over low until heated. Stir in sour cream and serve.

Mmmmm!!!