Chicken Pot Pie Casserole

Name: Chicken Pot Pie Casserole
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 1 mini pie crust (around 6x9 inches); 1 tablespoon extra virgin olive oil; 1 small onion (diced); 2 garlic cloves (minced); 1 cup cooked rotisserie boneless/skinless chicken breasts (roughly chopped); 1 cup frozen diced carrots; 1 cup frozen diced potatoes; ½ cup frozen peas; 1/2 cup chicken broth (or stock bouillon); 1/2 cup of thick heavy cream; 2 tablespoons milk (for brushing); Salt and black pepper (to taste)