Mushroom Tartlets
Updated Nov 01, 2024
These cheesy mushroom tartlets are the perfect appetizer for holiday parties - made with onions, mushrooms and cheese on top of a buttery flaky mini pastry!
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This Mushroom Tartlets recipe is sponsored by Roth Cheese. As always, all opinions are my own ?
Mushroom Tartlets are bite-sized appetizers made with puff pastry, caramelized onions, mushrooms and shredded cheese. For me, they are the perfect go-to holiday appetizer all throughout the season whether youโre hosting or attending a party. Theyโre vegetarian, can be made gluten-free on a different puff pastry, and theyโre totally festive!

What ingredients do you need for mushroom tartlets
The three most important ingredients are the puff pastry, the mushrooms and the cheese. Aside from that, you can really adjust everything else and swap ingredients as you see fit. I would highly recommend the onions still, as they add a sweet caramelized flavor after cooking for a long period of time. With minimal ingredients and effort, these can really make quite a big impression!
Here are the three key ingredients:
Puff Pastry: These are widely available in the freezer section of all grocery stores, especially during the holidays. Find your favorite brand and opt for a gluten-free one to keep this recipe grain free. Make sure to thaw the puff pastry if youโre using frozen 20 minutes before assembling. However, donโt leave it at room temperature longer than 20-30 minutes.

Mushrooms: The type of mushrooms here can vary based on preference. For ease, low price and convenience, I would recommend cremini mushrooms or white button mushrooms. But you can also get more fancy and use something like shiitake mushrooms. Be sure to slice the mushrooms or chop them finely so they can fit into the small puff pastries.

Cheese: I love using the Grand Cru from Roth Cheese Itโs an alpine-style cheese made with fresh local milk in Wisconsin and then aged 4+ months. Itโs the perfect cheese for the holidays because itโs unique and special with a robust and full-bodied taste. That means these mushroom tartlets wonโt taste ordinary, but truly remarkable. The cheese really makes a difference!

How to make mushroom tartlets
- Cook chopped onions with olive oil. Youโre going to cook them for about 15 minutes to caramelize them.
- Youโll know theyโre done because they will be browned, but not burnt, and shrink down by more than half.
- Next, add the sliced mushrooms and some sugar of choice (which is optional).
- When the mushrooms are fully cooked and browned, throw in the garlic and some fresh herbs, like rosemary, sage or thyme, and cook for an additional minute. Adding the herbs at the end will really help to bring out the flavor.

Now youโre ready to assemble the mushrooms tartlets. Youโll use one sheet of puff pastry and cut out small circles using a cookie cutter or other small round shape. The recipe is enough for about 24 2-inch rounds, but it will depend on how much you stuff them. You can also re-roll the leftover puff pastry to create about 12 more rounds if you wanted to stretch the recipe.

Brush egg wash on the puff pastry. Then youโll have to either prick the centers or use a smaller cookie cutter to form an indentation in the middle of the puff pastry. This prevents the center from really puffing up. Now just add about 2 tablespoons of the mushroom mixture on top.

Next youโre ready to add the cheese on top. I finely shred the Grand Cru from Roth Cheese so it creates crispy edges when baked in the oven. Donโt worry if some fall off the mushroom puff pastry; it will still be cheesy perfection!

Then youโre ready to bake them in the oven until the puff pastry gets all flaky and the cheese melts. You wonโt be able to resist eating them when they come out of the oven! My mushroom enthusiast son devours these and even my mushroom nonfan daughter gave them a try and was sold by the combination of the crispy cheese and the airy puff pastry.
Tips for making mushroom tartlets
- Chop the onions and mushrooms more quickly using a food processor. With the long cooking time for the onions and mushrooms, they both shrink up quite a bite, so having perfect shapes is not necessary. If you find it quicker to use a food processor, itโs a great option for making them faster.
- Adjust the size of the mushroom puff pastry. I love this recommended size for a savory bite-sized finger food option. But you can turn them into plated appetizers by cutting larger circles, and you can even serve them on a wide or round flatbread.
- Prep the mushroom mixture in advance. While caramelizing the onions and cooking the mushrooms isnโt difficult, it is time consuming waiting for the onions to caramelize. So, I recommend making this in advance to minimize prep the day youโre baking them. Just be sure not to assemble on the puff pastry as the cooked vegetables will make the pastry soggy.
Frequently asked questions
Yes, thatโs the great thing about the recipe. You can make the entire recipe in advance and freeze them for up to 3 months. Then reheat them by popping them oven at 350ยฐF for 5 minutes until the cheese melts. You can also make everything and assemble up to a day in advance. Then bake them just as guests arrive. Theyโre a perfect make-ahead Thanksgiving recipe!
Yes, thatโs also a way to make the recipe faster and eliminate a couple steps. Donโt forget to still prick the puff pastry though or make small incisions throughout the pastry to make sure that the center doesnโt rise too much.
These mushroom tartlets are always such a hit with friends and family! In fact, I think anytime you serve bite-sized food, especially in puff pastry form, theyโre sure to be a huge crowd pleaser. From the flaky puff pastry to the sweet onion mushroom mixture to the robust crispyย Grand Cru from Roth cheese on top, they are all around perfect holiday appetizers. Roth Cheeseย can be found in your grocerโs deli case and online via Instacart and Amazon Fresh.

More holiday appetizers:
- Christmas Wreath Salad
- Vegetarian Stuffed Mushrooms
- Spanakopita Triangles
- Baked Brie Holiday Appetizer
- Mac and Cheese Bites
- Cauliflower Fritters
- Crostini with Roasted Tomatoes
- Vegetable Spring Rolls
Thank youย Roth Cheese for sponsoring this Mushroom Tartlets recipe.
If youโve tried this healthy-ish feel goodย Mushroom Tartlets recipe or any other recipe on Feel Good Foodie, then donโt forget toย rate the recipeย and leave me a comment below! I would love to hear about your experience making it. And if you snapped some shots of it, share it with me onย Instagramย so I can repost on my stories!

Mushroom Tartlets
Video
Ingredientsย ย
- 1 sheet puff pastry thawed according to package instructions
- 2 large onions chopped
- 2 tablespoons olive oil
- ยผ teaspoon salt
- 1 teaspoon dark brown sugar
- 8 ounces mushrooms thinly sliced
- 2 garlic cloves pressed
- 2 tablespoons dried thyme
- 1 egg plus 1 tablespoon water beaten together
- ยพ cup Roth Grand Cru cheese shredded
Instructions
- Preheat oven to 400ยฐF. Line a large baking sheet with parchment paper
- Heat the olive oil in a large pan over medium heat. Add the onions and cook for 15 minutes, stirring occasionally until soft and golden. Stir in the brown sugar and salt and add the mushrooms. Cook together the mushrooms are caramelized, about 5-7 minutes. Stir in the garlic and thyme and cook together until fragrant, about 1-2 more minutes. Turn off the heat and set aside.
- Unfold the pastry sheet on a lightly floured surface. Roll the pastry sheet into an 18ร9-inch rectangle. Cut 24 (2-inch) circles and brush the pastries with the egg wash. Prick the centers of the pastries with a fork to prevent them from puffing up too much
- Spoon about 2 tablespoons of the onion and mushroom mixture into each circle. Top with about ยฝ tablespoon of the cheese. You can roll the leftover pastry to make more if you have extra ingredients
- Bake the tartlets until theyโre golden brown, about 18-20 minutes then allow them to cool for 10 minutes. Garnish with fresh parsley, if desired.
Notes
Nutrition
Nutrition information provided is an estimate. It will vary based on cooking method and specific ingredients used.






Comments
These came out so good I brought them to two holiday parties and they were devoured at each! I drizzled just a touch of honey on mine โ one batch with hot honey โ and it tasted wonderful
Aww, love that you used hot honey. Yum! So glad they were a hit!! Thanks, Lauren!
Could these be made in the Puff Pastry Shells? Wondering if it would be easier/quicker than cutting the pastry sheets.
Yes, I think that would work fine!
Made a sort of roll/log instead of the tartlets, and it turned out fantastically. I also used one less onion about a million more mushrooms because we had an excess of chanterelles. Added sage too and it was the hit of the meal. Love your recipes so much!
Amazing!! Love that you made it your own! Thanks so much, Amanda!!
I have now made these and they taste delicious but I donโt recommend making in a muffin tin as they all stuck in the pan so first batch was not for company. Second batch I didnโt roll the puff pastry out too thin. I used parchment paper on a cookie sheet as demonstrated in the above recipe explanation. They turned out much better. I now presume the olive oil divided was meant to grease the muffin tins but that instruction was omitted in error. Otherwise, I will make these again.
So happy you liked them and found a method that worked for you! Thank you so much for sharing your experience, Linda!!
Where do you use the other two tbsp of olive oil? In the description above you use a cookie sheet but instructions say you use muffin tins? Please advise. Thanks!
Iโm so sorry but it looks like there were some typos in this recipe. There are only 2 tablespoons olive oil. And the recipe is made in a cookie sheet but you can make it in a muffin tin if youโd like. I updated the recipe card to reflect these changes.
If itโs a small Brie, cut the rind off, I used vegan gluten free puff pastry, not doing that again. So, while mine were not greatโฆ Iโm definitely making again with the above changes. I also made them filled with condensed cream of mushroom soup and they were a big hit!
So happy they were a hit, Naoise!! Thank you!
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