Roll out pie crust on a nonstick baking sheet or silicone baking mat. Bake pie crust according to the packaging instructions.
Begin by melting butter in a large soup pot. Add in diced onions, carrots, and celery. Sweat for 5 minutes, until onions are translucent.Add in flour and stir for 1-2 minutes.
Add shredded chicken breast, frozen peas, corn, potatoes, salt, and pepper. Stir.
Slowly add chicken stock, whisking constantly. Simmer on medium-low heat for 20 minutes or until the potatoes are cooked through.Add heavy cream and stir to incorporate.
Top with crumbled pie crust and enjoy.
