Ingredients

• 5 tablespoons margarine
• 2 carrots, chopped
• 2 stalks celery, chopped
• 1 green bell pepper, chopped
• 1 onion, chopped
• 5 button mushrooms, chopped
• 1/2 cup chopped ham
• 1/2 cup all-purpose flour
• 2 tablespoons cornstarch
• 4 cups chicken broth
• 4 cups milk
• 1/2 teaspoon paprika
• 1/4 teaspoon ground cayenne pepper
• 1/2 teaspoon ground mustard
• 2 cups shredded sharp Cheddar cheese
• salt to taste
• ground black pepper to taste