Broccoli Cheese Soup

This soup, from The Greasy Skillet, was surprisingly delicious, despite its humble name and ingredients. This could be one of my favorite meals to date! I paired this soup with a freshly baked loaf of Asiago Cheese bread.
4 tablespoons of butter.
3-4 carrots shredded
3-4 ribs of celery diced
a 16 oz. bag of frozen chopped broccoli. I've also used a 10 and 12 oz. bag, depending what I find in the store.
1 cup of diced onion
3 cans of chicken broth
3 cans of cream of potato soup
1 lb. of Velveeta diced
8 ounces of sour cream
salt and pepper to taste

Melt the butter in a large pot. Saute the celery, carrots, onion, and broccoli for 10-15 minutes.
Pour in the chicken broth and cream of potato soup.
Allow the soup to simmer for 30 minutes.
Add the Velveeta and stir until it's melted.
Right before serving add the sour cream and stir until it's blended with the soup.

Serve the soup with some nice crusty bread