Turkey and Sweet Potato Shepherd's Pie - Blast from the Past

In today's episode of Paula's Best Dishes, Paula make turkey and sweet potato shepherd's pies - https://www.pauladeen.com/recipe/turkey-and-sweet-potato-shepherds-pie/ Ingredients 4 tablespoons butter, plus more for greasing 2 1/2 lbs sweet potatoes, peeled and cubed 2 large carrots, peeled and diced 2 celery stalks, chopped 1 large Vidalia onion, finely chopped 1 parsnip, peeled and diced 2 tablespoons fresh thyme, finely chopped 2 teaspoons fresh rosemary, finely chopped 2 lbs ground turkey 1/4 cup tomato paste 2 tablespoons all-purpose flour 2 tablespoons Worcestershire sauce 2 cups low-sodium chicken broth 1/2 (8 oz) package cream cheese 1 large egg, scrambled 10 oz peas, fresh or frozen