Fry chopped bacon (or just buy pre-cooked bacon from the Costcos like me :))
Saute onions, carrots and celery in about a tablespoon of butter until carrots are oh so tender.
Add chicken or vegetable broth (2-3 cans) and chopped potatoes.
Cook until potatoes are tender and add most of a quart of half and half. Use the remaining half and half to make a thickener with some flour or cornstarch. Add that to the soup to thicken her right on up. Add the bacon here.
I put shredded cheese and sour cream on top but you can put anything that tastes good on baked potatoes in it!