Cheesy Chicken Soup

2-3 Carrots, diced
2-3 Stalks Celery, diced
1 Onion, Diced
2 cups cooked Chicken, cubed
10 chicken bullion cubes
1 15 oz bottle of cheese whiz
3 cubes butter
1 1/2 c flour

Boil Veggies, drain and retain water. Add enough water to make 3 qts, add bullion cubes. When they are dissolved, add cheese whiz and blend. Melt butter and stir in flour in separate pan. Slowly add butter and flour mixture, stirring constantly to avoid lumps. Add chicken and veggies.