This Pioneer Woman Creamy Chicken Spaghetti Casserole is a creamy and cheesy recipe, which is made with white mushrooms and Parmesan cheese. It’s the ultimate comfort food recipe, ready in about 1 hour and 40 minutes.
Pioneer Woman Creamy Chicken Spaghetti Casserole Ingredients
- 1 whole Cut Up Fryer Chicken
- 1 stick (1/2 Cup) Butter
- 16 oz. weight White Mushrooms, Sliced
- 1/4 cup Dry White Wine
- Kosher Salt And Pepper
- 1/4 cup Flour
- 2 cups Chicken Broth (reserved from chicken or canned)
- 1 1/2 cups Whole Milk
- 1/4 cup (additional) Dry White Wine
- 1 cup Freshly Grated Parmesan Cheese
- 1 cup Whole Black Olives, Chopped
- 1 tsp. Kosher Salt, Or To Taste
- Freshly Ground Black Pepper
- Extra Cheese, For Sprinkling
- 1 lb. Thin Spaghetti
How To Make Pioneer Woman Creamy Chicken Spaghetti Casserole
- Cook the chicken and spaghetti: Place the chicken in a large pot of water and boil for 30-40 minutes until cooked through. Remove the chicken, let it cool, and reserve the broth in the pot. Bring the reserved broth to a boil, break the spaghetti into thirds, and cook it in the broth until al dente. Drain the spaghetti. Once the chicken is cool, remove the meat from the bones and shred it.
- Sauté the mushrooms: While the chicken and pasta cook, melt 2 tablespoons of butter in a large skillet. Add the mushrooms, 1/4 cup of white wine, salt, and pepper. Cook for 8-10 minutes until the liquid has evaporated. Remove the mushrooms from the skillet and set aside.
- Make the cream sauce: In the same large skillet, melt the remaining 6 tablespoons of butter over medium-low heat. Whisk in the flour to create a roux and cook for 1-2 minutes. Slowly pour in 2 cups of the reserved chicken broth, whisking constantly. Pour in the milk and the additional 1/4 cup of wine. Let the sauce bubble and cook until it has thickened.
- Combine the casserole: Turn off the heat and stir the grated Parmesan cheese into the sauce until melted. Add the sautéed mushrooms, shredded chicken, and chopped olives. Stir to combine, then check the seasonings, adding more salt and pepper if needed. Gently fold in the cooked spaghetti.
- Bake and serve: Transfer the mixture to a 9×13-inch casserole dish. Sprinkle with extra cheese if desired. Bake at 350°F for 20-25 minutes, or until golden brown and bubbly.

Recipe Tips
- How to get the most flavor? The key is using the broth that the chicken was boiled in to cook the spaghetti. This infuses the pasta with a rich chicken flavor that you can’t get from just water.
- Can I use a rotisserie chicken for a shortcut? Absolutely. This is a great time-saver. Use about 3-4 cups of shredded rotisserie chicken and substitute the reserved broth with 8-10 cups of good-quality store-bought chicken broth for boiling the pasta and making the sauce.
- How to make a smooth cream sauce? When making the roux, pour the liquid (broth and milk) in very slowly at first, whisking constantly. This prevents lumps from forming and creates a silky-smooth sauce.
- Can I make this ahead of time? Yes, you can assemble the entire casserole, cover it, and refrigerate it for up to a day before baking. You may need to add 10-15 minutes to the baking time if it’s going into the oven cold.
What To Serve With Creamy Chicken Spaghetti Casserole
This rich and hearty casserole is a meal in itself, but it pairs perfectly with:
- A simple green salad with a tangy vinaigrette
- Warm, crusty garlic bread
- Steamed green beans or roasted broccoli
How To Store Creamy Chicken Spaghetti Casserole
- Refrigerate: Store leftovers in an airtight container or tightly covered in the refrigerator for up to 4 days.
- Freeze: You can freeze the baked casserole. Let it cool completely, then cover it tightly with plastic wrap and foil. It can be frozen for up to 3 months. Thaw overnight in the refrigerator before reheating.
Creamy Chicken Spaghetti Casserole Nutrition Facts
- Serving Size: 1 serving (1/8th of casserole)
- Calories: 680 kcal
- Fat: 35g
- Carbohydrates: 50g
- Protein: 38g
Nutrition information is estimated and may vary based on ingredients and cooking methods used.
FAQs
Why break the spaghetti into pieces?
Breaking the spaghetti into thirds makes the casserole much easier to scoop and serve than if you were to use full-length strands.
Can I leave out the black olives or mushrooms?
Of course. This recipe is very adaptable. If you’re not a fan of olives or mushrooms, you can simply omit them. You could also add other ingredients like sautéed bell peppers or peas.
My sauce seems too thin. What did I do wrong?
The sauce should thicken up nicely as it bubbles on the stove. If it still seems thin, just let it simmer for a few extra minutes, whisking occasionally, to allow it to reduce further before you add the other ingredients.
Try More Pioneer Woman Recipes:
- Pioneer Woman Chicken Corn Chowder Recipe
- Pioneer Woman Best Chicken Breast Melt In Your Mouth Recipe
- Pioneer Woman Roasted Chicken Recipe
Pioneer Woman Creamy Chicken Spaghetti Casserole Recipe
Description
A rich and comforting casserole with tender chicken, spaghetti, and mushrooms all folded into a homemade creamy Parmesan sauce and baked until bubbly.
Ingredients
Instructions
- Boil chicken until cooked; remove chicken, reserving the broth. Shred chicken meat.
- Cook spaghetti (broken into thirds) in the reserved boiling broth until al dente; drain.
- Sauté mushrooms in 2 tbsp butter and 1/4 cup wine until liquid evaporates.
- In a large skillet, make a roux with 6 tbsp butter and flour. Slowly whisk in 2 cups broth, milk, and remaining 1/4 cup wine. Simmer until thick.
- Turn off heat, stir in Parmesan. Add shredded chicken, mushrooms, olives, and cooked spaghetti.
- Transfer to a 9×13-inch casserole dish.
- Bake at 350°F for 20-25 minutes until golden and bubbly.
Notes
- u003cliu003eUsing the broth from the boiled chicken to cook the pasta is the secret to the deep flavor in this dish.u003c/liu003eu003cliu003eFor a shortcut, use a store-bought rotisserie chicken and canned chicken broth.u003c/liu003eu003cliu003eEnsure the cream sauce has thickened on the stovetop before you combine it with the other ingredients.u003c/liu003eu003cliu003eThis casserole is a great make-ahead meal for potlucks or busy weeknights.u003c/liu003e
