Cast-Iron Skillet Chicken Pot Pie

Name: Cast-Iron Skillet Chicken Pot Pie
Prep time: 20 min
Cook time: 55 min
Total time: 1 h 15 min
Cuisine: American
Ingredients: 2 small russet potatoes (peeled & diced); 3 tbsp butter; ½ small sweet yellow onion (diced); 2 carrots (diced); 2 celery stalks (diced); 1 clove of garlic (minced); 3 tbsp flour; 2 cups chicken broth; ½ cup whole milk; Sea salt and freshly cracked pepper (to taste); 1½ cups roasted chicken (chopped); ¼ cup frozen corn; ¼ cup frozen peas; 1 pre-made pie crust