Avocado Shrimp Bisque

Cut avocados in half. Discard pits. Spoon meat into a small bowl. Chop cooked shrimp. In a medium saucepan, combine avocado, chicken broth, whole milk, lemon juice, and chopped onion. Heat slowly to boiling, stirring frequently. Add chopped shrimp, along with salt and pepper. Heat through, but do not boil. Remove from heat. Adjust seasonings to taste. May be served hot or cold.