Cajun Shrimp Bisque

3 tablespoons butter 1 onion , finely chopped 2 stalks celery , finely chopped 1 garlic clove , minced 1/8 teaspoon dry mustard 1/8 teaspoon cayenne pepper 2[...]

4 cups 1% low-fat milk 2 cups diced peeled baking potatoes 1 teaspoon cajun seasoning 1/4 teaspoon salt 1/4 teaspoon pepper 2 cans cream-style corn 1 lb large[...]