If you’re craving something light, flavorful, and slightly fancy without spending hours in the kitchen, Mushroom and Spinach Stuffed Flounder is the perfect choice. This dish delivers restaurant-quality flavor with minimal effort, making it ideal for both a quick weeknight meal and an impressive dinner for guests.
Flounder, a delicate white fish, has a mild flavor and a tender texture that pairs beautifully with earthy mushrooms and leafy spinach. The filling starts with sautéed mushrooms, garlic, and onions, cooked until golden and aromatic. Add a handful of fresh spinach to the skillet until wilted, then stir in a touch of cream cheese or ricotta to bind everything together into a rich, savory filling.
To assemble, simply spoon the mixture onto each fillet, roll them up gently, and secure with a toothpick if needed. A drizzle of lemon juice and a sprinkle of paprika or parmesan on top adds brightness and a touch of color. Bake the fish just until flaky and tender, about 15 to 20 minutes.
Not only is this meal high in protein and low in carbs, but it’s also incredibly satisfying without feeling heavy. Serve it with a side of steamed veggies, cauliflower mash, or a simple green salad for a complete and balanced dinner.
What makes this recipe so special is how easily it elevates everyday ingredients. The combination of spinach and mushrooms offers a lovely contrast of flavors and textures, while the mild flounder lets those ingredients shine.
Whether you’re trying to eat lighter, impress guests, or simply break out of a dinner rut, Mushroom and Spinach Stuffed Flounder is a must-try. It’s elegant, wholesome, and proof that great meals don’t have to be complicated.
To complement the rich flavors of the Mushroom and Spinach Stuffed Flounder, consider serving it with a side of steamed vegetables or a fresh salad. For a heartier meal, you can also pair it with some wild rice or roasted potatoes. To enhance the dining experience, a glass of crisp white wine or a light-bodied red wine would perfectly complement the flavors of this dish.

Ingredients
- 4 flounder fillets
- 2 cups mushrooms sliced
- 2 cups spinach fresh
- 1/2 cup onion diced
- 2 cloves garlic minced
- 1/2 cup parmesan cheese grated
- 1/4 cup bread crumbs
- 2 tbsp olive oil
- Salt and pepper to taste
Instructions
- Preheat oven to 375 degrees F (190 degrees C).
- In a large skillet, heat olive oil over medium heat. Add diced onion and minced garlic, and cook until onion is translucent.
- Add sliced mushrooms to the skillet and cook until softened. Stir in fresh spinach and cook until wilted. Remove from heat.
- In a small bowl, combine grated Parmesan cheese and bread crumbs. Season with salt and pepper.
- Lay flounder fillets flat on a clean surface. Spoon the mushroom and spinach mixture onto each fillet. Sprinkle the Parmesan and bread crumb mixture on top.
- Roll up the fillets and secure with toothpicks. Place the stuffed flounder in a baking dish.
- Bake in the preheated oven for 20-25 minutes, or until fish flakes easily with a fork.
- Serve hot and enjoy!
So fancy! Made it for a dinner party and everyone was so impressed. Thanks for sharing!
Eh, honestly it was kinda bland. I added some lemon juice and it helped a bit, but still didn’t wow me. 🤷♂️
I get what you mean. I tried it too and thought it was kinda plain. Maybe trying some spices could help? 🤔
Great recipe! Only thing is, I used cheddar instead of Parmesan ’cause that’s what I had. Still yum!
Delish! I switched spinach for kale, and it worked out fine. Easy and quick meal!
yum, fish!!!
This recipe is fine but I burnt mine a little…that’s on me though. Pay attention to the time.
Do I really have to roll the fillets? Seems like too much work for fish.
I’m not great in the kitchen, but this was pretty easy to follow. I managed to mess up the rolling part tho… still tasted good haha.
Too many steps for my liking! Cooking should be quick and easy. I just baked the fish with salt and pepper instead. Much simpler!
I get that! Sometimes, less is more. Baking fish is definitely easier! But this recipe is really tasty if you have some time. 😊
This recipe is absolutely delicious! The flavors blend so well together. Definitely a keeper!
Glad you enjoyed it! It’s always a hit at my family meals too.
Nah, not for me. Fish and mushrooms? That’s just wrong! I’ll stick with chicken.
Followed every step and it was perfect! My family loved it, especially my picky daughter.
Such a simple recipe! I didn’t have flounder, used cod instead and it turned out great!
This was absolutely delicious! The flavors blended so well together. Will definitively make again!
This was surprisingly good! I never thought of using flounder like this. Will definitely make again!
I had a tough time with the rolling part. Ended up with a mess. But the taste was okay.
Just tried this and my kitchen smells so good! Can’t wait to taste!
I’m so glad to hear that! The aroma is half the fun, isn’t it? Enjoy the flavors!
I was skeptical at first, but wow! This is delicious. I did substitute the flounder for tilapia and it still turned out great!
Good recipe but needed more spices. Salt and pepper ain’t enough for fish!
I totally agree! I added cayenne pepper and it made such a difference. Spices really bring out the flavor in fish! 👍
More spices? I thought it was fine as it was. Can’t go wrong with salt and pepper, right? 🤷♂️
Yum! Made this last night for a dinner party and everyone raved about it! A real keeper! 🎉🍽️
Why would you put mushrooms in fish? That’s just weird. I like the fish plain.
I dunno, felt like there was something missing. Maybe a sauce would help? 🤔
OMG, this is the best! 😍 I added a bit of lemon juice for some extra zing. Highly recommend!
Lemon juice sounds like a great idea! I’ll have to try that next time. Thanks for the tip!
Yum! I used frozen spinach and it turned out great! So easy and tasty! 😋
Frozen spinach is a smart choice! Glad it worked out for you! 😄
Great recipe! Used different cheese because I was out of parmesan. Still good!
Glad to hear you enjoyed it! What cheese did you use instead?
Cheese is cheese, right? I dunno about that. Parmesan gotta be the best for this!
Not worth making again. The flavors were just bland…maybe more spice next time?
Honestly, I was skeptical about stuffed fish, but this turned out pretty decent. My kids even liked it!
This is kinda fancy for me. I’ll stick to my fish sticks, thanks!
Is flounder fish even healthy? I heard good things about salmon. Anyway, my kids loved it!
This recipe is fantastic! Never thought of stuffing fish like this, and the flavors are just perfect. My family loved it! 👍
Not my fav. Thought it would be more flavorful. Also, isn’t spinach bad for fish? Just sayin’.
I tried this recipe but it didn’t come out right. The mushrooms were too soggy. I think I cooked them too long.