Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 cup dry wild rice blend
- 2 1/2 cups low-sodium chicken broth (for cooking rice)
- 1 1/2 lb boneless, skinless chicken thighs or breasts, cut into 1-inch pieces
- 2 tbsp olive oil
- 8 tbsp unsalted butter, divided
- 1 large yellow onion, diced (about 1 1/2 cups)
- 12 oz cremini mushrooms, sliced
- 3 garlic cloves, minced
- 1/4 cup all-purpose flour
- 1 1/2 cups whole milk
- 2 cups low-sodium chicken broth (for sauce)
- 1/2 cup sour cream
- 1 tbsp Dijon mustard
- 1 tsp dried thyme
- 1/2 tsp dried rosemary (optional)
- 1 1/4 tsp kosher salt, divided
- 1/2 tsp black pepper, divided
- 2 tbsp chopped fresh parsley, divided
- 3/4 cup panko breadcrumbs
- 1/3 cup finely grated Parmesan
Do This
- 1. Simmer wild rice blend in 2 1/2 cups broth until tender, 45–50 minutes; drain if needed.
- 2. Heat oven to 375°F. Butter a 9 x 13-inch baking dish.
- 3. Brown chicken in olive oil (2–3 minutes per side); transfer to a bowl.
- 4. Sauté onion and mushrooms in butter; add garlic. Stir in flour, then whisk in milk and broth to make a creamy herb sauce.
- 5. Off heat, stir in sour cream, Dijon, thyme, parsley, and seasoning.
- 6. Mix rice + chicken + sauce in the baking dish. Top with panko + Parmesan + melted butter.
- 7. Bake covered 20 minutes, then uncovered 15–20 minutes until bubbling and lightly crisp on top. Rest 10 minutes before serving.
Why You’ll Love This Recipe
- Comfort-food casserole vibes with a slightly nutty, hearty wild rice base.
- A creamy herb sauce that tastes homemade (because it is), without being fussy.
- Great for feeding a crowd, and it reheats like a dream for leftovers.
- That lightly crisp, buttery panko-Parmesan topping makes every scoop extra satisfying.
Grocery List
- Produce: 1 large yellow onion, 12 oz cremini mushrooms, 3 garlic cloves, fresh parsley (small bunch)
- Dairy: unsalted butter, whole milk, sour cream, Parmesan cheese
- Meat: 1 1/2 lb boneless, skinless chicken thighs or breasts
- Pantry: wild rice blend, low-sodium chicken broth, olive oil, all-purpose flour, Dijon mustard, panko breadcrumbs, dried thyme, dried rosemary (optional), kosher salt, black pepper
Full Ingredients
Wild Rice
- 1 cup dry wild rice blend
- 2 1/2 cups low-sodium chicken broth (or water)
- 1/4 tsp kosher salt (only if using water or unsalted broth)
Chicken and Vegetables
- 1 1/2 lb boneless, skinless chicken thighs or breasts, cut into 1-inch pieces
- 2 tbsp olive oil
- 1 large yellow onion, diced (about 1 1/2 cups)
- 12 oz cremini mushrooms, sliced
- 3 garlic cloves, minced
- 3/4 tsp kosher salt (for seasoning chicken/veg)
- 1/2 tsp black pepper, divided
Creamy Herb Sauce
- 6 tbsp unsalted butter
- 1/4 cup all-purpose flour
- 2 cups low-sodium chicken broth
- 1 1/2 cups whole milk
- 1 tbsp Dijon mustard
- 1 tsp dried thyme
- 1/2 tsp dried rosemary (optional)
- 1/2 cup sour cream
- 1 tbsp chopped fresh parsley
- 1/2 tsp kosher salt (or to taste, depending on broth salt level)
Crispy Topping
- 3/4 cup panko breadcrumbs
- 1/3 cup finely grated Parmesan
- 2 tbsp unsalted butter, melted
- 1 tbsp chopped fresh parsley (for finishing)
Step-by-Step Instructions
Step 1: Cook the wild rice until tender
In a medium saucepan with a lid, combine 1 cup wild rice blend and 2 1/2 cups low-sodium chicken broth (or water plus the optional 1/4 tsp salt). Bring to a boil over high heat.
Reduce to a gentle simmer, cover, and cook until the grains are tender and many have split open, 45–50 minutes (check your package timing; some blends vary). If there’s excess liquid, drain the rice well. Set aside.
Step 2: Preheat the oven and prep your baking dish
Preheat the oven to 375°F. Butter a 9 x 13-inch baking dish (or lightly coat with butter or oil). This helps prevent sticking and makes serving easier.
Step 3: Brown the chicken for better flavor
Pat the chicken dry (this helps it brown). Season with 1/2 tsp kosher salt and 1/4 tsp black pepper.
Heat 2 tbsp olive oil in a large skillet or Dutch oven over medium-high heat. Add the chicken in an even layer (work in two batches if your pan is crowded). Sear until lightly golden, about 2–3 minutes per side. The chicken does not need to cook through.
Transfer chicken to a bowl and set aside.
Step 4: Sauté onions and mushrooms until deeply savory
Reduce heat to medium. Add 2 tbsp of the butter to the same skillet. Add the diced onion and cook, stirring occasionally, until softened, 4–5 minutes.
Add the sliced mushrooms and cook until they release their moisture and begin to brown, 8–10 minutes. Stir in the minced garlic and cook until fragrant, 30 seconds.
Season with the remaining 1/4 tsp black pepper and 1/4 tsp kosher salt (you’ll adjust later after the sauce is done).
Step 5: Make the creamy herb sauce
Add the remaining 4 tbsp butter to the skillet. Once melted, sprinkle in the 1/4 cup flour and stir constantly for 1 minute to cook out the raw flour taste (this is your roux).
Slowly whisk in the 2 cups chicken broth, then whisk in the 1 1/2 cups whole milk. Keep whisking and bring to a gentle simmer; the sauce will thicken in 3–5 minutes.
Turn off the heat. Whisk in the 1 tbsp Dijon mustard, 1 tsp dried thyme, and optional 1/2 tsp dried rosemary. Stir in the 1/2 cup sour cream and 1 tbsp chopped parsley until smooth. Taste and season with up to 1/2 tsp kosher salt as needed (broth saltiness varies).
Step 6: Assemble the casserole
Add the cooked wild rice and the browned chicken (plus any juices) to the sauce. Stir until the rice and chicken are evenly coated and the mixture looks creamy and cohesive.
Spoon everything into the prepared baking dish and spread into an even layer, making sure the chicken pieces are tucked into the mixture so they stay moist while baking.
Step 7: Add the topping and bake until bubbling and crisp
In a small bowl, combine 3/4 cup panko, 1/3 cup Parmesan, and 2 tbsp melted butter. Sprinkle evenly over the casserole.
Cover the dish tightly with foil and bake for 20 minutes. Remove foil and continue baking until the edges are bubbling and the top is lightly crisp and golden, 15–20 minutes more.
Let rest for 10 minutes before serving (this helps the sauce thicken slightly so it scoops neatly). Finish with 1 tbsp chopped fresh parsley.
Pro Tips
- Use thighs for extra tenderness: Chicken thighs stay especially juicy in casseroles, but breasts work well too.
- Don’t rush the mushrooms: Let them cook until their moisture evaporates and they brown. That browning adds big flavor to the whole bake.
- Control thickness: If your sauce gets too thick before baking, whisk in an extra 1/4 cup milk. If it seems thin, simmer 1–2 minutes longer before adding sour cream.
- Salt at the end: Broth and Parmesan both add salt; tasting after the sour cream and cheese are in keeps you from over-salting.
- Even browning: For a more golden top, move the dish to the upper third of the oven for the last 5 minutes (watch closely).
Variations
- Rotisserie shortcut: Swap in 4 cups cooked shredded chicken and skip the browning step. Stir it into the sauce with the rice, then bake as directed.
- Greens add-in: Stir in 3 cups baby spinach at the very end of sauce-making (it will wilt quickly), then assemble and bake.
- Cheesy herb bake: Mix 1 cup shredded Gruyère or sharp cheddar into the casserole before topping for a richer, gooier finish.
Storage & Make-Ahead
Refrigerate: Cool completely, cover, and refrigerate for up to 4 days.
Reheat: For best texture, reheat covered in a 350°F oven until hot, 20–25 minutes. Individual portions microwave well; add a splash of milk or broth if it seems thick.
Make-ahead: Assemble the casserole (without the panko topping), cover, and refrigerate up to 24 hours. Before baking, let it sit at room temperature for 20 minutes, add topping, and bake. You may need an extra 10–15 minutes covered if it’s going in cold.
Freeze: Freeze baked or unbaked (tightly wrapped) up to 2 months. Thaw overnight in the fridge, then bake at 375°F until bubbling; expect 35–50 minutes depending on starting temperature.
Nutrition (per serving)
Approximate, based on 8 servings: 520 calories, 33 g protein, 38 g carbohydrates, 26 g fat, 3 g fiber, 780 mg sodium.
