One-Pan Creamy Tuscan Chicken Casserole
It was one of those weeks where I kept opening the fridge and closing it again, hoping something new would appear. Nothing did. What I had instead was a pack of chicken thighs, a half-used jar of sun-dried tomatoes, and a bag of spinach on its last good day. Turns out that’s exactly what you need for a really good dinner.
Thank you for reading this post, don't forget to subscribe!This one comes together in a single skillet, which matters more to me some nights than the recipe itself does. Fewer dishes means I actually get to sit down before the kids need something else.
Why You’ll Love This Dinner
The sauce is the whole point here. It’s rich without feeling heavy, and the sun-dried tomatoes give it a little tang that keeps the cream from tasting flat. The garlic is doing a lot of work too — there’s a good amount of it, and you can smell it the second it hits the pan.
I like that everything happens in one pan, from searing the chicken to building the sauce to finishing it in the oven. Less cleanup, more time to actually enjoy the meal. And the leftovers hold up well, which is always a bonus on a Wednesday when nobody wants to think about food twice in one week.
Ingredients
Nothing here is hard to find. A quick trip to a regular grocery store covers it, and if you already keep sun-dried tomatoes in the pantry, you’re most of the way there.
- 4 bone-in, skin-on chicken thighs (boneless works too, just watch the cook time)
- Salt, pepper, and a little garlic powder for seasoning the chicken
- 1 tablespoon olive oil
- 1/2 small onion, diced
- 4 cloves garlic, minced
- 1/2 cup sun-dried tomatoes packed in oil, roughly chopped
- 1/2 cup dry white wine
- 2 tablespoons butter
- 2 tablespoons flour
- 1 cup chicken stock, low-sodium if you have it
- 1 cup heavy cream
- 1 heaped teaspoon Dijon mustard
- 1/4 cup grated Parmesan
- 2 cups baby spinach
- Fresh thyme, a few sprigs, for seasoning
Freshly grated Parmesan melts into the sauce more smoothly than the pre-shredded kind, so it’s worth the extra minute with a grater if you have one handy.
Step-by-Step Instructions
Sear the chicken. Pat the thighs dry and season them well with salt, pepper, and garlic powder. Heat the olive oil in a large oven-safe skillet over medium-high heat. Sear the chicken skin-side down for about 5 to 6 minutes, until the skin is deeply golden, not just pale. Flip and sear another 3 minutes, then remove the chicken to a plate. It won’t be cooked through yet — that happens later in the oven.
Build the base. Lower the heat to medium and add the diced onion to the same pan, scraping up any browned bits stuck to the bottom. Cook for about 3 minutes until it softens, then stir in the garlic and sun-dried tomatoes and cook for another minute, just until the garlic smells fragrant.
Deglaze with wine. Pour in the white wine and let it simmer for a couple of minutes until it reduces by about half. The pan should smell noticeably different at this point, sharper and a little sweet.
Make the cream sauce. Push everything to one side and melt the butter in the empty space. Whisk in the flour and let it cook for about 90 seconds so it loses its raw flour taste. Slowly whisk in the chicken stock, then the cream, stirring the whole time so it doesn’t clump. Once it’s smooth, stir the onion and tomato mixture back in along with the Dijon mustard and Parmesan. The sauce should thicken enough to coat the back of a spoon without turning gluey.
Wilt the spinach. Add the baby spinach a handful at a time. It looks like way too much at first, then collapses down to almost nothing within about 30 seconds of stirring.
Bake. Nestle the chicken thighs back into the sauce, skin-side up, along with any juices from the plate. Tuck in the thyme sprigs. Transfer the skillet to a 375°F oven and bake, uncovered, for about 35 minutes, until the chicken reaches 165°F and the sauce is bubbling around the edges.
Let it rest for about 5 minutes before serving. The sauce settles and thickens slightly during that time, and it’s worth the wait.
What to Serve With It
This one practically begs for something to soak up the sauce. Egg noodles or a wide pasta like pappardelle work beautifully underneath it. Plain rice does the job too if pasta isn’t in the cards that night. On the side, roasted green beans or steamed broccoli give the plate something to balance against all that cream, and a slice of crusty bread never hurts.
If you’re looking for another creamy weeknight option down the road, Crock Pot Marry Me Chicken has a similar rich, tomato-and-cream flavor profile and is easy to start in the morning.
Variations
Swap the chicken thighs for boneless if you want easier serving, just check for doneness a few minutes earlier since they cook faster. Kale can stand in for spinach if that’s what’s in your fridge — just add it a couple minutes before the spinach step since it takes a little longer to soften. For a lighter version, half-and-half works in place of heavy cream, though the sauce won’t be quite as thick.
If you’re craving something in the same creamy, spinach-forward direction but baked start to finish, High Protein Spinach Artichoke Chicken Casserole is worth keeping in your back pocket too.
Storage
Leftovers keep in the fridge for 3 to 4 days in an airtight container. The sauce actually tastes better the next day once the flavors have had time to settle. Reheat gently in a skillet over low heat with a splash of chicken stock to loosen the sauce back up, or use the microwave in short bursts. This dish can be frozen for up to 2 months, though the sauce may separate slightly when thawed — a quick whisk while reheating usually brings it back together.
Frequently Asked Questions
Can I use chicken breast instead of thighs?
You can, but thighs hold up better through the oven time without drying out. If you do use breast, keep an eye on it and consider pulling it a few minutes early.
Do I have to use wine?
No. You can substitute an equal amount of chicken stock. The sauce loses a bit of depth without the wine, but it still turns out well.
My sauce turned out thin. What happened?
It usually just needs a few more minutes on the stove before the chicken goes back in, or a touch more simmer time in the oven with the lid off.
Can I make this ahead of time?
Yes. Assemble everything up through nestling the chicken back in, then cover and refrigerate. Add about 10 extra minutes to the bake time since it’ll be going into the oven cold.
Is there a dairy-free option?
Full-fat coconut cream works well here and pairs nicely with the tomato flavor. The texture will be a little different, but still rich.
What if I don’t have sun-dried tomatoes?
Roasted red peppers, chopped, are a decent substitute, though the flavor will be milder and less tangy.
I hope this one earns a regular spot in your dinner rotation. It’s become one of those meals I reach for when the fridge feels empty but I still want something that tastes like I tried.
One-Pan Creamy Tuscan Chicken Casserole
Equipment
- Large oven-safe skillet
- Whisk
- Meat thermometer
Ingredients
- 4 bone-in, skin-on chicken thighs boneless works too, watch cook time
- salt, pepper, and garlic powder for seasoning the chicken
- 1 tbsp olive oil
- 1/2 small onion diced
- 4 garlic cloves minced
- 1/2 cup sun-dried tomatoes packed in oil roughly chopped
- 1/2 cup dry white wine
- 2 tbsp butter
- 2 tbsp flour
- 1 cup chicken stock low-sodium if available
- 1 cup heavy cream
- 1 tsp Dijon mustard heaped
- 1/4 cup grated Parmesan freshly grated preferred
- 2 cup baby spinach
- fresh thyme sprigs a few, for seasoning
Instructions
- Pat the chicken thighs dry and season with salt, pepper, and garlic powder. Heat olive oil in a large oven-safe skillet over medium-high heat and sear the chicken skin-side down for 5-6 minutes until deeply golden. Flip and sear another 3 minutes, then remove to a plate.
- Lower heat to medium and add the diced onion to the same pan, scraping up browned bits. Cook about 3 minutes until softened, then stir in garlic and sun-dried tomatoes and cook 1 minute more.
- Pour in the white wine and simmer for a couple of minutes until reduced by half.
- Push the mixture to one side and melt the butter in the empty space. Whisk in the flour and cook 90 seconds. Slowly whisk in the chicken stock, then the cream, stirring until smooth. Stir the onion and tomato mixture back in with the Dijon mustard and Parmesan until the sauce coats the back of a spoon.
- Add the baby spinach a handful at a time, stirring until wilted, about 30 seconds.
- Nestle the chicken thighs back into the sauce, skin-side up, along with any accumulated juices. Tuck in the thyme sprigs.
- Transfer the skillet to a 375°F oven and bake uncovered for about 35 minutes, until the chicken reaches 165°F internally and the sauce is bubbling at the edges.
- Let rest 5 minutes before serving.
