Rating: 3.66
(92)

Mushroom and Spinach Stuffed Flounder

October 19, 2023

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.

Mushroom and Spinach Stuffed Flounder
Mushroom and Spinach Stuffed Flounder
3.66 from 92 votes
Delicious and flavorful flounder stuffed with a savory mixture of mushrooms and spinach.
Servings 4 people
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes

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!

Nutrition

Calories: 250kcalCarbohydrates: 8gProtein: 30gFat: 10gFiber: 2g
Calories: 250kcal
Meal Type: Lunch
Cuisine: French
Keyword: cozy recipes, mushroom, spinach
Cooking Method: Baked
Time: >45 Min
Tried this recipe?Mention @coolinarco or tag #coolinarco!
Join the Conversation
  1. User avatar tillie.oreilly says:

    5 stars
    So fancy! Made it for a dinner party and everyone was so impressed. Thanks for sharing!

  2. 3 stars
    Eh, honestly it was kinda bland. I added some lemon juice and it helped a bit, but still didn’t wow me. 🤷‍♂️

    1. User avatar carmela.schneider says:

      3 stars
      I get what you mean. I tried it too and thought it was kinda plain. Maybe trying some spices could help? 🤔

  3. User avatar onie.bechtelar1957 says:

    5 stars
    Great recipe! Only thing is, I used cheddar instead of Parmesan ’cause that’s what I had. Still yum!

  4. 1 star
    Too complex for me 😩 I’ll just stick to frying fish next time.

    1. User avatar hyacinth.howe85 says:

      4 stars
      I get you! Frying fish is way easier. But this stuffed fish sounds fancy! Maybe you can try it someday? 😊

  5. User avatar miquel.durgan says:

    3 stars
    I didn’t have Parmesan, so I used cheddar. Not sure if that was right.

  6. 4 stars
    Delish! I switched spinach for kale, and it worked out fine. Easy and quick meal!

  7. 4 stars
    So good! I didn’t have any spinach so I used kale instead, it worked perfectly! 😋

  8. 5 stars
    yum, fish!!!

  9. 3 stars
    This recipe is fine but I burnt mine a little…that’s on me though. Pay attention to the time.

  10. User avatar Lynne Harvey says:

    2 stars
    Isn’t flounder too expensive? Why not use tilapia? Taste dont matter to me anyways, fish is fish!

  11. User avatar adolph.cronin says:

    5 stars
    This was fantastic! Everyone loved it at dinner. The flavors blended perfectly!

    1. User avatar wonda.haley1962 says:

      5 stars
      That sounds amazing! Can’t wait to try this recipe myself. Thanks for sharing!

  12. User avatar curtis.volkman says:

    2 stars
    Not my thing. The mushrooms were too strong for me and my kids didn’t like the texture.

    1. 4 stars
      I get what you mean! Mushrooms can be a bit much sometimes. Have you tried other stuffings? Maybe cheese and herbs would be better for the kids.

    2. User avatar ladonna.lesch53 says:

      3 stars
      Honestly, I think the mushroom flavor is great! But I guess not everyone likes it. Just swap them out next time or make it without! No biggie.

  13. User avatar leandra.stark1979 says:

    2 stars
    Do I really have to roll the fillets? Seems like too much work for fish.

  14. 4 stars
    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.

  15. User avatar mauricio.willms1955 says:

    2 stars
    I didn’t have fresh spinach, so I used frozen, and it turned out mushy. Maybe fresh is a must.

  16. User avatar emil.gusikowski22 says:

    5 stars
    My family is picky with fish, but they actually ate it! Mushroom and spinach made it good!

  17. User avatar tommy.mills1994 says:

    2 stars
    Too many steps for my liking! Cooking should be quick and easy. I just baked the fish with salt and pepper instead. Much simpler!

    1. 4 stars
      I get that! Sometimes, less is more. Baking fish is definitely easier! But this recipe is really tasty if you have some time. 😊

  18. User avatar annamaria.oconnell says:

    5 stars
    This recipe is absolutely delicious! The flavors blend so well together. Definitely a keeper!

    1. User avatar Rob McKenna says:

      5 stars
      Glad you enjoyed it! It’s always a hit at my family meals too.

  19. User avatar treva.osinski1965 says:

    3 stars
    I forgot the toothpicks and it all fell apart during baking. Still tasted good though.

    1. User avatar graig.gerhold says:

      4 stars
      Sounds delicious! Next time, maybe use a different method to hold them together? But glad it still tasted good! 😊

  20. User avatar sabina.hudson36 says:

    2 stars
    Wow, please! That’s a lot of steps. Can’t we just fry the fish and call it a day?

    1. User avatar Nick O'Time says:

      4 stars
      I get what you’re saying! But sometimes the extra steps really make a dish special. This one sounds worth it! 🌟

  21. 1 star
    Nah, not for me. Fish and mushrooms? That’s just wrong! I’ll stick with chicken.

  22. User avatar basementDweller says:

    3 stars
    Is flounder the same as tilapia? Not sure if I did it right. But it tasted ok.

    1. User avatar January Kunze Sr. says:

      3 stars
      What?? I thought they were the same fish 😂. Still, if it tasted good, that’s all that matters!

    2. User avatar oPandariaNo says:

      4 stars
      Flounder and tilapia are not the same, but they’re similar. Glad your dish turned out ok!

  23. User avatar carmelina.smitham75 says:

    5 stars
    Followed every step and it was perfect! My family loved it, especially my picky daughter.

  24. User avatar christoper.satterfield says:

    4 stars
    Such a simple recipe! I didn’t have flounder, used cod instead and it turned out great!

  25. User avatar jerald.watsica67 says:

    5 stars
    This was absolutely delicious! The flavors blended so well together. Will definitively make again!

  26. User avatar randy.raynor2002 says:

    3 stars
    Honestly, who needs breadcrumbs? Just seems unnecessary, my stuff turned out mushy. Not super tasty 😒

  27. User avatar Restless Draugr says:

    4 stars
    Very easy to make! I just added some spices and it was perfect. Thanks!

  28. 4 stars
    This was surprisingly good! I never thought of using flounder like this. Will definitely make again!

  29. 3 stars
    I think I messed it up. I used frozen spinach instead of fresh. Tasted weird.

    1. 4 stars
      I wouldn’t worry too much! Frozen spinach is actually fine for cooking; it just has more moisture. Maybe try squeezing it out next time! 😊

  30. User avatar ArabianNights says:

    3 stars
    I had a tough time with the rolling part. Ended up with a mess. But the taste was okay.

  31. 5 stars
    Wow, this recipe is amazing! I loved the flavor of the mushrooms and spinach with the flounder. So delightful!

    1. User avatar phillip.wiegand says:

      5 stars
      Thanks for sharing your experience! I can’t wait to try this recipe myself.

  32. 4 stars
    Just tried this and my kitchen smells so good! Can’t wait to taste!

    1. User avatar danette.konopelski says:

      5 stars
      I’m so glad to hear that! The aroma is half the fun, isn’t it? Enjoy the flavors!

  33. User avatar ShanksOnePiece says:

    5 stars
    This dish is so fancy! I made it for a dinner party, and everyone loved it. Thanks for sharing!

    1. User avatar augustine.rowe13 says:

      2 stars
      Fancy? Really? Looks complicated. Can’t imagine my fam liking fish with mushrooms. 😕

    2. User avatar carter.simonis says:

      5 stars
      I’m so glad to hear that! This recipe really impresses guests. What sides did you serve with it?

  34. User avatar andres.wolf says:

    5 stars
    This recipe was a hit at our dinner party! The flavors are amazing. Will definitely make again!

  35. User avatar basementDweller says:

    4 stars
    I was skeptical at first, but wow! This is delicious. I did substitute the flounder for tilapia and it still turned out great!

  36. 2 stars
    Good recipe but needed more spices. Salt and pepper ain’t enough for fish!

    1. User avatar calvin.stokes75 says:

      5 stars
      I totally agree! I added cayenne pepper and it made such a difference. Spices really bring out the flavor in fish! 👍

    2. User avatar sherika.abbott4 says:

      2 stars
      More spices? I thought it was fine as it was. Can’t go wrong with salt and pepper, right? 🤷‍♂️

  37. 5 stars
    Yum! Made this last night for a dinner party and everyone raved about it! A real keeper! 🎉🍽️

  38. User avatar Reg Nullify says:

    4 stars
    Good flavor, but I think I put too much garlic. I might try less next time.

  39. User avatar tiera.schneider51 says:

    4 stars
    Delicious! Simple ingredients but came together nicely. Flounder is my favorite!

    1. User avatar johnnie.stiedemann says:

      3 stars
      Sounds good but I don’t know about mushrooms. Aren’t they kinda slimy? Just curious if it’ll taste good or not.

    2. User avatar demetrius.johnston1962 says:

      5 stars
      I totally agree! Flounder is the best, and this recipe sounds so easy to follow! Can’t wait to try it! 😍

  40. 5 stars
    This recipe is amazing! My family loved it, and I’ll definitely make it again.

  41. User avatar Carisa Hermiston PhD says:

    1 star
    Why would you put mushrooms in fish? That’s just weird. I like the fish plain.

  42. 5 stars
    I used haddock instead of flounder, and it turned out great! Nothing bad about that.

  43. User avatar samatha.kozey says:

    3 stars
    I dunno, felt like there was something missing. Maybe a sauce would help? 🤔

  44. User avatar ShanksOnePiece says:

    5 stars
    OMG, this is the best! 😍 I added a bit of lemon juice for some extra zing. Highly recommend!

    1. User avatar Wispmother says:

      5 stars
      Lemon juice sounds like a great idea! I’ll have to try that next time. Thanks for the tip!

  45. User avatar cody.olson1994 says:

    5 stars
    Yum! I appreciate the simple steps. I just added more garlic because garlic makes everything better!

    1. User avatar Reg Nullify says:

      5 stars
      Garlic is definitely the king of flavors! Can’t wait to try this with your twist!

  46. User avatar Peregrin Took says:

    2 stars
    Mushrooms and spinach? Yuck! I don’t know why anyone would want to mix those.

    1. 2 stars
      Nah, spinach ain’t good with nothin. Just stick to cheese and meat. Who needs this weird stuff?

    2. 4 stars
      I used to think mushrooms were gross too, but this recipe changed my mind! Give it a shot before you dismiss it.

  47. 5 stars
    Yum! I added some lemon zest and it brightened up the dish! Thanks for sharing!

    1. User avatar ShanksOnePiece says:

      5 stars
      Lemon zest is a genius idea! I can’t wait to try that next time. Thanks for the tip!

  48. User avatar ali.marvin8 says:

    4 stars
    Yum! I used frozen spinach and it turned out great! So easy and tasty! 😋

    1. User avatar thora.kling says:

      5 stars
      Frozen spinach is a smart choice! Glad it worked out for you! 😄

  49. User avatar wellRespected says:

    4 stars
    Great recipe! Used different cheese because I was out of parmesan. Still good!

    1. User avatar joel.kuhlman says:

      4 stars
      Glad to hear you enjoyed it! What cheese did you use instead?

    2. 2 stars
      Cheese is cheese, right? I dunno about that. Parmesan gotta be the best for this!

  50. 2 stars
    Not worth making again. The flavors were just bland…maybe more spice next time?

  51. User avatar serafina.ullrich47 says:

    5 stars
    Easy peasy! Quick to make and my kids gobbled it up. Will make again!

  52. 4 stars
    Honestly, I was skeptical about stuffed fish, but this turned out pretty decent. My kids even liked it!

  53. 1 star
    This is kinda fancy for me. I’ll stick to my fish sticks, thanks!

  54. 4 stars
    Is flounder fish even healthy? I heard good things about salmon. Anyway, my kids loved it!

  55. User avatar ShanksOnePiece says:

    5 stars
    This recipe is fantastic! Never thought of stuffing fish like this, and the flavors are just perfect. My family loved it! 👍

  56. User avatar rich.landlord says:

    1 star
    Not my fav. Thought it would be more flavorful. Also, isn’t spinach bad for fish? Just sayin’.

  57. User avatar katherin.langworth says:

    2 stars
    I dunno, it was kinda bland for me. I added some lemon but still felt it was missing something.

    1. User avatar Bernie Sauer says:

      4 stars
      I totally get what you mean! I thought it could use a bit more seasoning too. Maybe some garlic powder or paprika next time?

  58. User avatar chastity.hettinger says:

    2 stars
    I tried this recipe but it didn’t come out right. The mushrooms were too soggy. I think I cooked them too long.

  59. User avatar bernice.lockman says:

    1 star
    This was too complicated for me. I prefer simpler recipes. I’m not a chef, you know.

    1. User avatar garret.ernser2021 says:

      4 stars
      I totally get it! Some recipes really are over the top. Maybe try something really easy like a pasta dish next time?

  60. 4 stars
    Easy to make! I never cooked flounder before, but this turned out great. I will make it again!

  61. User avatar karey.russel10 says:

    3 stars
    It was alright but took too long to prepare. I thought it would be easier, honestly.

    1. User avatar henrietta.reinger59 says:

      4 stars
      I totally get it! Some recipes just seem to take forever. But did you try preparing some ingredients beforehand? Makes it easier! 😊

3.66 from 92 votes
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