- Preheat the oven to 375°F (190°C).
- In a large skillet, heat olive oil over medium heat. Add onions, carrots, and celery, and sauté until softened.
- Stir in the cooked chicken, peas, garlic powder, thyme, salt, and pepper.
- In a separate bowl, whisk together the gluten-free flour and chicken broth until smooth. Add the heavy cream and mix well.
- Pour the broth mixture into the skillet and stir until everything is well combined and heated through.
- Transfer the chicken and vegetable mixture into a gluten-free pie crust.
- Cover with another layer of pie crust, sealing the edges. Cut slits in the top crust to allow steam to escape.
- Bake in the preheated oven for 30-35 minutes, or until the crust is golden brown.
- Let it cool for a few minutes before serving.
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