If you have some roasted chicken left over after a family dinner, don’t let it go to waste—transform it into a cozy, creamy dinner that feels both comforting and a little indulgent with this Leftover Roast Chicken Stroganoff Recipe. It’s a fantastic way to breathe new life into your leftovers, marrying tender chicken with earthy mushrooms, vibrant kale, and a luscious sour cream sauce. This dish is a weeknight game-changer that comes together in just 15 minutes, making it perfect for busy days when you want something hearty yet quick to prepare.

Ingredients You’ll Need
The ingredients in this recipe are straightforward and work together beautifully to build flavor and texture. Each component has a special role, from the rich butter that starts the sauté to the tang of Dijon mustard that lifts the creamy sauce.
- Butter: Provides a silky base to cook your onions and mushrooms, adding richness.
- Onion: Thinly sliced for sweetness and depth in the sauce.
- Button mushrooms: Their earthiness complements the chicken perfectly; sliced thin to cook evenly.
- Cornflour (or plain flour): Thickens the sauce while keeping it smooth.
- Chicken stock: Adds savory liquid for the sauce, building layers of flavor.
- Sour cream: Brings creaminess and a subtle tang to balance the dish.
- Dijon mustard: Offers a gentle kick and complexity to the sauce.
- Salt and pepper: Essential seasonings to bring everything together.
- Kale: Adds a pop of color and a slight bitterness to contrast the richness.
- Cooked roast chicken: The star of the show; shredded to fold effortlessly into the sauce.
- Pasta: Perfect for soaking up all that delicious sauce.
- Fresh parsley: Optional garnish that brightens the dish visually and flavor-wise.
How to Make Leftover Roast Chicken Stroganoff Recipe
Step 1: Cook the Onions and Mushrooms
Start by warming a large pan over medium-high heat and melting the butter. Add the thinly sliced onion and cook for about a minute until it softens and becomes fragrant. Then stir in the mushrooms and continue cooking until they turn a lovely golden color. This step builds a savory base and elevates the earthiness of the mushrooms.
Step 2: Make the Sauce
Sprinkle the cornflour over the mushrooms and onions, stirring constantly to prevent lumps, and cook for about one minute. Next, pour in one cup of chicken stock while scraping the pan bottom with a wooden spoon to release all those flavor-packed browned bits. Add the remaining stock, sour cream, Dijon mustard, and the sliced kale for its color and subtle bite. Bring everything to a gentle simmer before reducing the heat to low, allowing the sauce to thicken over about five minutes.
Step 3: Add the Chicken
Once the sauce has thickened, remove the pan from heat and carefully stir in the shredded leftover roast chicken. Season well with salt and pepper. The goal here is to warm the chicken through and marry its flavors with the creamy mushroom sauce without drying it out.
Step 4: Serve Your Stroganoff
Serve your stroganoff over your favorite pasta, whether that’s tender egg noodles or a hearty tagliatelle. This rich sauce also pairs beautifully with mashed potatoes or creamy polenta for extra comfort. Top with fresh parsley if you like a burst of herbaceous freshness.
How to Serve Leftover Roast Chicken Stroganoff Recipe

Garnishes
Adding fresh parsley not only makes the dish feel polished but also cuts through the richness with its bright flavor. You can also sprinkle some freshly cracked black pepper or even a little smoked paprika for a subtle smoky note if you’re feeling adventurous.
Side Dishes
This stroganoff shines when paired with simple sides like buttered egg noodles or rustic mashed potatoes. A crisp green salad or steamed veggies such as green beans or asparagus can add freshness and balance to the meal, making it feel well-rounded and satisfying.
Creative Ways to Present
For a fun twist, try serving the stroganoff over roasted sweet potato slices or even stuffed inside large baked mushrooms to make it more of an elegant appetizer. You could also turn this into a comforting bake by layering the stroganoff with cooked pasta in a casserole dish topped with cheese and baking until bubbly.
Make Ahead and Storage
Storing Leftovers
Store any leftover stroganoff in an airtight container in the refrigerator. It will keep well for 2-3 days and can make a fantastic next-day lunch or dinner option, preserving all the creamy goodness.
Freezing
You can freeze this dish for up to 2 months. Make sure to cool it completely before transferring to a freezer-safe container. Because of the sour cream, the texture might change slightly upon thawing but reheating gently will help bring it back to its luscious state.
Reheating
Reheat the stroganoff gently on the stove over low heat, stirring often to prevent the sauce from breaking. Adding a splash of chicken stock or cream can help refresh the sauce if it thickened too much during storage.
FAQs
Can I use other types of leftover chicken?
Absolutely! Any leftover cooked chicken works wonderfully in this recipe, whether it’s from a rotisserie chicken or grilled chicken breasts. Just be sure to shred it finely for even distribution.
Is there a substitute for sour cream?
You can swap sour cream with Greek yogurt or crème fraîche if you prefer a lighter or tangier option, but add it at the end of cooking and keep the heat low to prevent curdling.
Can I make this gluten-free?
Yes, simply replace the cornflour or plain flour with a gluten-free thickener or cornstarch. Also, double-check that your chicken stock and pasta are gluten-free to keep the entire dish safe.
What pasta is best suited for the stroganoff sauce?
Wide noodles like egg noodles or pappardelle work brilliantly as they hold the sauce well. However, any pasta you have on hand will do just fine, so no need to run out to the store unless you want to.
Can I use fresh kale or other greens?
Fresh kale is ideal due to its texture and flavor balance, but you can substitute spinach or Swiss chard if you prefer something milder. Just add these greens towards the end as they cook faster.
Final Thoughts
This Leftover Roast Chicken Stroganoff Recipe turns humble leftovers into something truly special—creamy, comforting, and packed with flavor. It’s one of those dishes that feels like a warm hug after a busy day, yet comes together effortlessly. I hope you give it a try and discover how easy it is to create restaurant-quality dinners from what’s already in your fridge.
Print
Leftover Roast Chicken Stroganoff Recipe
- Prep Time: 5 minutes
- Cook Time: 10 minutes
- Total Time: 15 minutes
- Yield: 4 servings
- Category: Main Course
- Method: Stovetop
- Cuisine: European
Description
This Leftover Roast Chicken Stroganoff is a quick and comforting meal that transforms your cooked roast chicken into a creamy, flavorful sauce with mushrooms, onions, and kale. Perfect for using up leftovers, it’s ready in just 15 minutes and serves a family-sized portion over pasta or any preferred base.
Ingredients
Main Ingredients
- 3 tablespoons butter
- 1 onion, thinly sliced
- 300g button mushrooms, sliced
- 2 tablespoons cornflour (or plain flour)
- 2 cups chicken stock
- 200ml sour cream
- 1 tablespoon Dijon mustard
- Salt and pepper to taste
- 1 cup kale, de-stemmed and sliced
- 1–2 cups cooked roast chicken, shredded
To Serve
- Pasta (for serving)
- Fresh parsley (for garnish, optional)
Instructions
- Cook the onions and mushrooms: Heat a large pan over medium-high heat. Add the butter and onion, cooking for 1 minute until softened. Stir through the mushrooms and cook until golden, about 5-7 minutes.
- Make the sauce: Add the cornflour and cook for 1 minute, stirring constantly to avoid lumps. Pour in 1 cup of chicken stock and use a wooden spoon to scrape any browned bits from the bottom of the pan. Then add the second cup of chicken stock, sour cream, Dijon mustard, and kale. Bring to a gentle simmer, then reduce heat to low and cook for 5 minutes to thicken the sauce and wilt the kale.
- Add the chicken: Remove the pan from heat and stir through the shredded chicken until well combined and heated through. Season the stroganoff sauce with salt and pepper to taste.
- Serve: Serve the stroganoff over cooked pasta, mashed potatoes, or polenta as preferred. Garnish with fresh parsley if desired for added freshness and color.
Notes
- Using leftover roast chicken is ideal, but any cooked chicken can be used.
- If sour cream is unavailable, you can substitute with Greek yogurt, but add it off heat to prevent curdling.
- To make this gluten-free, use cornflour and check that the chicken stock is gluten-free.
- You can swap kale with spinach or other leafy greens if preferred.
- For a thicker sauce, reduce the chicken stock slightly before adding sour cream.
- Serve with egg noodles, tagliatelle, or your favorite pasta shape.

