Jarlsburg Cheese Soup

MIL gave us this recipe that she found somewhere.. and DH and i have made it a couple times. We made it tonight, and just thought i would post the recipe it really is easier than it might look.. and a great way to sneak in some veggies

3 tbsp butter
3 tbsp flour
4 cups chicken broth
2 cups chopped broccoli
3/4 cups chopped carrots
1/2 cup chopped celery
1 small onion chopped
1 clove garlic, chopped
1/4 tsp thyme
salt
pepper
1 cup cream ( light or heavy)
1 egg yolk
1 1/2 cups shredded Jarlsburg

1)in large sauce pan, melt butter
2)wisk in flour slowly and let cook for a few minutes
3) gradually blend in chicken broth, and bring to boil
4) add veggies/onion/garlic spices.. cover and simmer for 8 minutes under veggies are tender
5) blend in cream and egg yolk, and cook to thicken
6) slowly blend in cheese
7) serve with some crusty bread for dipping