Chicken and Cornmeal Dumplings in the slow cooker

Ingredients

• 3 carrots, thinly sliced
• 1 stalk celery, thinly sliced
• 1/2 cup fresh or frozen corn kernels
• 1/2 of a medium onion, thinly sliced
• 2 cloves garlic, minced
• 1/2 teaspoon dried rosemary, crushed
• 1 teaspoon garlic powder
• 1/4 teaspoon ground black pepper
• 2 chicken breasts
• 1 cup chicken broth
• 1/2 cup milk
• 1 tablespoon all-purpose flour