Chicken Pot Pie Soup

I've been on a soup kick lately. Not sure why exactly. I will definitely make this recipe again though. Good stuff!

1/4 cup butter
1/4 cup flour
1 can (12 oz) evaporated milk
1 package (16 oz) frozen mixed vegetables, prepared according to package directions
2 cups cooked chicken, shredded or cubed
1 can (14.5 oz) chicken broth
1/4 tsp onion salt
Ritz Crackers

Melt butter in medium saucepan over medium heat. Stir in flour and mix well. Gradually stir in evaporated milk. Cook, stirring constantly, until mixture comes to a boil. Add vegetables, chicken, broth, and onion salt and stir well. Heat through and serve. Top individual servings with Ritz Crackers.