Crockpot Chicken and Gravy

Bahan-bahan (4 porsi)

• 1¼ cups evaporated milk
• ¾ cup chicken broth
• 1 cube chicken bouillon
• ¾ teaspoon poultry seasoning
• ½ teaspoon onion powder
• ¼ teaspoon garlic powder
• ¼ teaspoon black pepper
• 1½ pounds boneless skinless chicken breasts
• 2 tablespoons cornstarch
• 1 tablespoon butter