Melt butter in a big pot (I used my favorite Emile Henry 4.2 quart Dutch Oven) over low heat Add flour. Whisk together until smooth and bubbly. Cook mixture for 2-3 minutes
Increase heat to medium and gradually whisk in milk (I used 2%)l. Cook until slightly thickened, about 14 minutes
Dice up four green onions
Cook 12 pieces of bacon. I cooked mine in the microwave on my bacon tray (it took two rounds). Crumble bacon once it's cooked
Add the potatoes and onions, stirring occassionally, until soup begins to bubble. Reduce heat, simmer gently for 10 minutes
Stir in bacon and sour cream to the potato soup (I aslo added in 2tbs of bacon grease...mmm!)
Add in grated cheddar cheese
Dish up and devour!!! I topped the soup with more green onions and grated cheese!