In a large skillet over medium heat, add a splash of oil and sauté the diced chicken until browned and cooked through. Season with salt, pepper, thyme, and parsley. Remove the chicken from the skillet and set aside.
In the same skillet, add the chopped onion and garlic. Sauté until the onion is translucent, about 3-4 minutes.
Add the sliced mushrooms to the skillet and cook until they have released their moisture and are tender.
In a large bowl, combine the cooked wild rice, sautéed chicken, mushroom mix, frozen peas, cream of chicken soup, and chicken broth. Mix until well combined.
Transfer the mixture to a greased 9x13 inch baking dish.
Sprinkle the shredded cheddar cheese evenly over the top, followed by the breadcrumbs for a crispy topping.
Cover the dish with foil and bake in the preheated oven for 25 minutes.
After 25 minutes, remove the foil and bake for an additional 15 minutes, or until the top is golden and bubbly.
Let it cool for a few minutes before serving to allow the casserole to set.
Notes
Let the casserole cool for a few minutes before serving to allow it to set.