This post may contain affiliate links, please see our privacy policy for details.

Upgrade this year’s holiday stuffing with my Herby Mushroom Croissant Stuffing. Buttery croissants, cozy herbs, caramelized wild mushroom, kale, and Gruyère cheese take classic stuffing from bland and boring to flavorful and completely delicious. Even stuffing haters love this casserole. It’s just as good as a holiday side dish as it is a meal. Prep this stuffing in advance and then bake up just before you’re ready for dinner for super easy holiday entertaining.

overhead photo of Herby Mushroom Croissant Stuffing

Stuffing has never been a highly cherished Thanksgiving side dish for my family. I know that sounds crazy, since stuffing is one of the most classic Thanksgiving sides there is. But for whatever reason my family has just never been all that into it. In the last few years however, I’ve had to cook Thanksgiving for a lot of non family members. And because I love to please all, I knew that my Thanksgiving menu needed to include a good stuffing.

I’ve tried more classic recipes, but never found anything I absolutely loved.

Until this year. When I had the idea to swap out dry bread for buttery croissants, my views on stuffing changed immediately. Stuffing can be good, delicious actually. You just need to make it with croissants. Oh, and cheese…

Of course.

overhead photo of croissants

When I was thinking up this year’s Thanksgiving menu, and brainstorming stuffing concepts, I had just made a recipe that used croissants as the base. I had a ton of day old croissants left over, so I decided to do a quick stuffing test run with the ingredients I had on hand.

Pretty much immediately, I knew the recipe was going to be good. I mean? Croissant stuffing? With wild mushrooms and kale and Gruyère cheese?

It’s basically a meal on its own, and it’s all things delicious.

mushrooms and kale in skillet

Like most stuffing recipes, you want to be using dry bread.

The key here is to toast your croissants up in the oven to dry them out a bit before adding any broth to them. This helps them hold up while baking, and gives them a nice crispness.

While that’s happening, caramelize the mushrooms with butter, fresh sage, thyme, and a good amount of kale. I love using a good mix of vegetables in my stuffing to give it color, flavor, and texture. The warming sage and thyme pair perfectly with the earthy mushrooms and kale. It’s one of my favorite fall combos and perfect for a Thanksgiving meal.

overhead close up photo Herby Mushroom Croissant Stuffing

Once your croissants are toasted, toss them with the mushroom mixture, add cheese, and then bake.

Nothing too fancy, but the use of croissants is such an upgrade from the classic stuffing. And I have to say, everyone loved this dish. I ended up serving the leftovers to my family and they ate it multiple nights in a row. The verdict was two thumbs up all around, and everyone agreed that the croissants are a game changer.

Already excited to serve this pretty stuffing on Thanksgiving next week for the family we have coming into town.

overhead close up photo of Herby Mushroom Croissant Stuffing

Also, I’m not a stuff the stuffing inside the turkey kind of person. I much prefer to bake my stuffing separately.

One of the most delicious details of this recipe are the crisp, cheesy croissants on the top layer. They’re mouth-watering and so good, and my favorite part of the dish. For that reason, I’m not advocating placing this stuffing inside your bird.

Got it? OK. Cool.

Enjoy, enjoy!

overhead photo of Herby Mushroom Croissant Stuffing with spoon in casserole

PS. If you’re looking for a little different stuffing option, check out this oldie but goodie…Buffalo Cheddar Beer Bread Stuffing.

If you make this stuffing be sure to leave a comment and/or give this recipe a rating! Above all, I love to hear from you guys and always do my best to respond to each and every comment. And of course, if you do make this recipe, don’t forget to also tag me on Instagram! Looking through the photos of recipes you all have made is my favorite!

Herby Mushroom Croissant Stuffing

Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Servings: 8
Calories Per Serving: 1050 kcal

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.



  • 1. Preheat the oven to 350 degrees F. Grease a 9x13 inch casserole dish.
    2. Arrange the torn croissants in the baking dish and lay 2 tablespoons of thinly sliced butter over the croissants. Transfer to the oven and bake 5-8 minutes, until the croissants are lightly toasted.
    3. Meanwhile, heat the olive oil In a large skillet over medium heat. When the oil shimmers, add the onions and cook until fragrant, about 3-5 minutes. Add the celery and mushroom, and season with salt and pepper. Cook undisturbed for 5 minutes or until golden, stir and continue cooking until the mushrooms have caramelized, 3-5 minutes. Add the butter, garlic, kale, sage, and thyme. Cook, stirring occasionally until the kale has wilted down, about 5 minutes. Remove from the heat and set aside.
    4. In a very large mixing bowl, whisk together 2 cups broth and the eggs. Add the toasted croissants and the mushroom/kale mixture + all the butter left in the skillet, gently toss to combine. If the mix seems dry, add additional broth, 1/4 cup at a time until all the bread is moist. Pour the mixture into the casserole dish. Top evenly with cheese. 
    5. Cover the dish with foil and bake for 35 minutes. Remove the foil and check for dryness, if needed drizzle over extra broth, 1/4 cup at a time, to keep things moist, then continue baking for another 10-15 minutes or until the stuffing is golden on top. Serve warm.


To Make a Few Hours Ahead: This can be made assembled a few hours ahead of time and kept in the fridge. Allow the stuffing to come to room temperature before baking. 
To Make a Few Days Ahead: complete the recipe through step 3. Toss the mushrooms, kale and croissants together. Store in a sealed container in the fridge for up to 3 days. When ready to assemble, remove from the fridge. And continue on with step 4, tossing the croissants + mushrooms with the egg mix, then assemble in baking dish. This can be done up to 4 hours ahead of time. Bake as directed. 
View Recipe Comments

horizontal photo of Herby Mushroom Croissant Stuffing

Add a Comment

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.


  1. Good morning,

    I took my stuffing out of the oven after baking for 35 minutes but I feel like the entire bottom is too wet what should I do?

  2. Added this to Christmas Dinner since I wanted something to accompany the Prime Rib. This was absolutely perfect! Everyone thought it was an excellent accompaniment to the meat.

    I did tear my croissants smaller, which worked out well. Substituted a smoked cheddar for the Gruyere cheese since I was out of the Gruyere and tossed some shredded bacon over the top before baking. Will definitely be making this again!

  3. 5 stars
    Made this recipe for thanksgiving and it was such a hit! Added it to the recipe box as we will definitely be making it again

  4. I’m not a fan of stuffing but decided to give this recipe a try and IT IS my favorite stuffing! Made it last night for the first time for thanksgiving and I will be making it again 100%.
    It will be my go to stuffing from now on. My guests loved it as well and could not believe it was made with croissants 🥐 ☺️

    1. Hi Paulina,
      Thanks for making this recipe and your comment, so glad it was enjoyed! I hope you had a wonderful Thanksgiving! xx

  5. 5 stars
    Absolutely superb. Followed the recipe very closely, except added a little more garlic and gruyere. Thanks for sharing!

    Fresh out of the oven it was one of the best stuffings I’ve ever eaten. Re-heated the next day…well guess you shouldn’t make more than you can finish in one meal. The flavor was still excellent, but the texture was really soggy.

    FYI- my bakery makes really large croissants, 8-9 are plenty if they’re super big.

    1. Hi Joan,
      Thanks for making this recipe and your comment, so glad it was enjoyed! I hope you had a wonderful Thanksgiving! xx

  6. 5 stars
    This was delicious! The croissants produce a rich and flavorful dish! I used 8 croissants and skipped the butter browning step because the ones I bought were brown to begin with. I tore the croissants in much smaller pieces and the result was perfect. I also added extra kale. Will make it again for sure!

    1. Hey Susan,
      Thanks for making this recipe and your comment, so glad it was enjoyed! I hope you had a wonderful Thanksgiving! xx

  7. 5 stars
    This recipe was wonderful. I have several stuffing recipes I love and this one tops them all. Thank you Teighan for always knocking it out of the park!!

    1. Hey Erin,
      Thanks for making this recipe and your comment, so glad it was enjoyed! I hope you had a wonderful Thanksgiving! xx

  8. 5 stars
    My family has lost their minds over this dish! It has become a holiday staple and gets devoured in minutes. This dish is the main reason one person is flying to Michigan from Colorado for Thanksgiving dinner!!! Its also apparently fool-proof if you follow the recipe exactly. I hate mushrooms so don’t taste it as I cook and it still gets rave reviews about seasoning and amount of herbs.

  9. Hi, I definitely want to make this croissant stuffing for Thanksgiving. Sounds delish! But my some of my family doesn’t like mushrooms. Any suggestions of other vegetables I could substitute for the mushrooms? They are a tough thing to substitute. Thank you!

    1. Hi Cathy,
      You could use celery or carrots in place of the mushrooms. I hope you love this recipe, please let me know if you give it a try! xT

  10. Is it possible to make this with chunks of sourdough bread instead? I can’t find croissants that don’t have iffy ingredients in them and I’m trying to keep from having to make my own.

    1. Hey Elizabeth,
      Of course, sourdough would also work well in this recipe! Please let me know if you have any other questions! xT