Slow Cooker Chicken Stew

Bahan-bahan (6 porsi)

• 1 tablespoon butter
• 1 small yellow onion (chopped)
• 2 cloves garlic (minced)
• 1 ½ pounds Yukon gold potatoes (or red potatoes, cut into ½-inch pieces)
• 2 medium carrots (diced)
• 1 rib celery (diced)
• 1 cup frozen corn (thawed)
• 1 pound boneless skinless chicken breasts
• ½ teaspoon poultry seasoning
• ½ teaspoon salt
• ½ teaspoon black pepper
• ¼ teaspoon dried thyme leaves
• 3 cups chicken broth (or chicken stock)
• 1 cup heavy whipping cream (or evaporated milk)
• 2 tablespoons cornstarch
• 1 cup frozen green beans (thawed)