Fastelavnsboller af wienerbrødsdej med hasselnødsremonce og saltkaramel (Hazelnut and Salted Caramel Danish Carnival Buns)

A flaky and buttery Danish pastry bun, filled with a sweet hazelnut paste, whipped cream, and salted caramel sauce. Fancy, delicious, impressive...can it get any better?

Rating: 5.00
(3)
February 9, 2024

Today’s Recipe

You may be looking at the name of today’s recipe and thinking, wow, that just rolls off the tongue, doesn’t it? Hint: it really doesn’t 😂. In all seriousness, it’s the most impossible thing to come up with names for recipes that have multiple components. We want to include everything we can from the recipe in the title, but it also needs to be understandable, so that’s the balance we’re constantly trying to find. And when it comes to Danish recipe names in general, “short and sweet” is definitely not the case. Any ideas for better names, either in English or Danish? Leave them in the comments!

Danish pastry buns filled with hazelnut, whipped cream, and salted caramel.

The Final Countdown…to Fastelavn!

Anyway, it’s an exciting day – our final fastelavnsbolle recipe of the year! If you’ve been following along, you’ll know that our goal was to share 3 new recipes with you this Fastelavn, and this is the third and final one. We’ve already shared a double chocolate bun and a raspberry cheesecake-inspired choux bun, which you should definitely check out if you haven’t already. And if you’re into simple and old fashioned, check out our original fastelavnsbolle recipe! Fastelavn is coming up this Sunday, and we hope everyone has a great day, whether you’re celebrating or not. If you want to read more about the traditions of the holiday or the history of the fastelavnsbolle, head on over to our blog. We will be eating lots of leftover fastelavnsboller, that’s for sure!

Our Most Professional Recipe Ever?

Now, compared to the other three fastelavnsbolle recipes that we have (which includes our traditional version), this is fancy as hell. Why? Well, it uses wienerbrødsdej, or Danish pastry dough, which turns out super flaky and buttery and is the perfect base for the rest of the components. Then, we fill it with a hazelnut remonce (just finely ground hazelnuts, butter, and sugar mixed together) and bake it.

Danish pastry buns filled with hazelnut, whipped cream, and salted caramel.

To build the final pastry, we cut the bun in half, pipe whipped cream circles, and add some delicious salted caramel sauce to the middle and sprinkle chopped hazelnuts on top of that. The flavors are incredible, an amazing balance of sweet, salty, creamy, and rich, not to mention the delicious bun that brings it all together.

Danish pastry buns filled with hazelnut, whipped cream, and salted caramel.

Ingredients

Since there are a few different components to this dessert, you’ll find more detail in the recipe below. But let me give you a quick rundown of the ingredients you’ll need, as well as possible substitutions. The dough is a yeasted dough that is laminated with lots of butter. We would recommend high-quality European butter for this, as it has a higher fat percentage and this makes laminating easier and reduces the chances of all the butter leaking out during baking. The hazelnut filling is quite simple – butter, sugar, and finely ground hazelnuts. If needed, you could replace the hazelnuts with pistachios or almond, both would be delicious options. We make our salted caramel sauce homemade, but you could use store-bought if you prefer.

How to Make Fancy Carnival Buns

While this may not be the easiest place to start if you’re a beginner baker, it’s a great way to practice laminating dough, because even if the final bun isn’t perfect, you get to add a bunch of delicious things to it that will automatically make it delicious and impressive! We even have an “easier,” same day danish pastry dough recipe that is great for these fastelavnsboller! The dough is definitely the most challenging part, as it needs to be carefully laminated without any butter coming out and then needs to rise until the buns are very jiggly and wobbly to the touch. If you underproof the dough, the butter will leak out and the final bun will have big gaps in the pastry and a puddle of butter underneath. For the rest of the components, the process is quite straightforward and can be found below in the recipe. We hope you try your hand at making these!

Danish pastry buns filled with hazelnut, whipped cream, and salted caramel.
Danish pastry buns filled with hazelnut, whipped cream, and salted caramel.

Fastelavnsboller af wienerdej (Hazelnut and Caramel Danish Carnival Buns)

5 from 3 votes
A flaky and buttery Danish pastry bun, filled with a sweet hazelnut paste, whipped cream, and salted caramel sauce. Fancy, delicious, impressive…can it get any better?
Servings 12 servings
Prep Time 2 hours
Cook Time 15 minutes
Resting/Proofing Time 4 hours
Total Time 6 hours 15 minutes
Print Recipe Pin Recipe

IMPORTANT NOTE:

We always bake using a digital scale and the metric system (grams and milliliters). We can’t promise that our cup measurements will be as accurate! Additionally, we bake and develop our recipes in a convection (fan) oven.

Ingredients
 
 

PASTRY DOUGH

REMONCE (HAZELNUT FILLING)

  • 65 grams chopped hazelnuts
  • 50 grams softened, unsalted butter
  • 50 grams granulated sugar
  • Pinch of salt

TOPPINGS/FILLINGS

  • 65 grams chopped hazelnuts *optional, for additional garnish!

Salted Caramel: Adapted from Sally's Baking Blog

  • 200 grams granulated sugar
  • 85 grams unsalted butter
  • 120 ml heavy cream
  • 1 tsp salt

Whipped Cream

  • 350 ml heavy whipping cream
  • 2-3 tsp granulated sugar *optional: we don't tend to sweeten our whipped cream, but feel free to add it for a touch of sweetness!
  • 1 tsp vanilla extract

Instructions
 

  • The night before baking, begin preparing the pastry dough by following the steps in our wienerbrødsdej recipe. Or, you can make the dough the same day, and use our easier version! For this recipe, we tend to use the easier version to get it done the same day!
  • You can also make your salted caramel a day ahead of time (steps are further down below!) to make it's cooled down. You can do this the day of if you prefer!
  • The next day or after the dough is done rising, follow the lamination instructions in the danish pastry dough recipe.
  • While your dough is resting between folds, take your chopped hazelnuts (they can also be whole!) and run them through a food processor for at least a minute until it's been ground down to a finer consistency. It won't be as smooth as almond flour, but it should be closer to a crumb consistency!
    Adding hazelnuts to a food processor to finely mill them.
  • Mix the finely ground hazelnuts, softened butter, sugar, and pinch of salt together in a bowl until it forms a smooth paste.
    Mixing the hazelnut remonce together.
  • Once you have completed all the laminations according to the wienerbrødsdej recipe or the easier wienerbrødsdej recipe and the dough has rested, start rolling out your dough on a well floured surface, being gentle. If you get any tears in the dough, add some flour to the spot! When it's around 16" in length, cut it in half and wrap one half in plastic wrap and put it back in the fridge. It's much easier to work with half of the dough at a time.
    Cutting danish pastry dough in half.
  • Roll the remaining half of your dough into a flat rectangle that is about 1/8-1/4 inch thick.
    Rolling out danish pastry dough.
  • Trim the edges of your rectangle; it should measure 12" in length and 8" in width.
    Trimming Danish pastry dough.
  • Cut the dough into six equal sized squares (4 inches by 4 inches). You can use the trimmed dough from the edges and make them into little swirls or croissant shapes and bake them with the pastries if you want!
    Cutting the pastry dough into squares.
  • Add a small blob of hazelnut filling to each of your squares. Keep in mind that you will use half of the marzipan filling for this half of the dough, so reserve the second half for the other part of the dough!
    Adding hazelnut filling to the pastry dough.
  • Then fold each corner towards the center, encasing the hazelnut filling inside.
    Folding together the danish pastry dough.
  • Pinch together all the seams well; press the corners in towards the center to help it look more round.
    Creating a pastry dough bun.
  • Turn the pastry over and place it on the counter. Cup it in your hands while turning it on the counter a few times. This helps fold the corners in and make it more of a round shape as well.
    A pastry dough bun.
  • You should be left with a bun! Transfer the pastries to a baking sheet lined with parchment paper, making sure to put the seam side down.
    Adding the buns to a baking sheet.
  • Cover the first batch of pastries, either with plastic wrap or a damp dish towel, and let them start proofing.
    Covering the buns in plastic wrap.
  • Repeat the rolling out of the dough and the shaping steps with the other half of the dough. Transfer to a baking sheet and cover with plastic wrap.
  • Now leave your shaped pastries to rise for at least 1.5 – 2 hours, perhaps longer. While the pastries are rising, it's a good time to make the salted caramel filling.
  • In a small saucepan, add in your granulated sugar.
    Adding sugar to a pot.
  • Heat over low to medium heat, depending on how hot your stove runs. Melt the sugar until it turns a golden amber color. You can stir the sugar with a spatula or spoon to get the heat distributed more evenly, just know that it may clump up and you'll have to wait for the larger crystals to melt! Try not to heat it too quickly, as it could burn.
    Sugar melted until golden.
  • Once the sugar has fully melted and is a golden amber color, add in the butter a few tablespoons at a time, whisking really well in between. It's also a good idea to turn the heat down to low so the sugar doesn't burn.
    Adding butter to the sugar.
  • Once all the butter has been incorporated, slowly add in the heavy cream, whisking constantly. It may look a little broken, but keep whisking and it should come together!
    Adding heavy cream to the caramel.
  • Add in the salt and whisk well.
    Adding salt to make salted caramel.
  • Turn off the stove and take the caramel off the heat to cool for a few minutes.
  • Transfer to a container and let cool for at least 20 minutes at room temperature, then place in the fridge until cooled down. For quick cooling down, you can put the container in a bowl of ice water for around 10 minutes, stirring every minute.
    Adding caramel to a jar to cool down.
  • Check on your proofing pastries. This is a very important step, because under-proofing these means major butter leakage (we are speaking from experience!). You'll know the pastries are ready when they feel super light and airy (almost wobbly when you touch them) and have doubled in size. Another test is to poke the dough, and if it leaves an impression and doesn't spring back immediately, it should be ready.
    Buns after rising.
  • Towards the end of the rising time, preheat your oven to 375 degrees F (190 C).
  • Once your pastries have risen, egg wash the first baking sheet that you prepared.
    Egg washing the buns.
  • Bake for about 15-20 minutes on the center rack, until golden brown! We bake these one at a time, since we prepare the dough one half at a time anyway. So while the first baking sheet is in the oven, prepare the second baking sheet by repeating the egg wash, pressing down the center, and adding the topping.
  • When the first batch comes out of the oven, put in the second baking sheet for another 15-20 minutes, and bake until golden brown. Place the pastries on a cooling rack and let cool completely.
    Buns after baking.
  • When the pastries are almost done cooling, prepare your whipped cream. In the bowl of a stand mixer or a medium mixing bowl, add your heavy whipping cream along with vanilla and sugar. Whisk in the stand mixer or using a hand mixer until you reach stiff peaks.
    Whipping cream to stiff peaks.
  • Add whipped cream to a piping bag with a star tip. If you don't have a piping bag, you can also just spoon the whipped cream onto the buns!
  • Take your cooled pastry and cut it in half.
    Cutting a bun in half.
  • Pipe two layers of whipped cream around the edge.
    Piping whipped cream onto the bun.
  • Add about a tablespoon's worth of salted caramel to the center.
    Adding salted caramel to the center.
  • Sprinkle with additional chopped hazelnuts if you'd like!
    Adding hazelnuts to the top.
  • Add the top of the bun, and add a little bit of caramel and a dot of whipped cream to the top (also optional, it's just for decor!) with a few extra pieces of chopped hazelnut.
    Adding whipped cream to the top of the bun to decorate.
  • Repeat with all of the buns! We found that it was just the right amount of whipped cream and salted caramel for all 12 buns, but if you fill them a little bit less, you might have some leftover.
    Danish carnival bun filled with whipped cream and hazelnut filling, as well as salted caramel.
  • Enjoy the buns – make sure to store in the fridge because of the whipped cream.
Course: Breakfast, Dessert, Snack
Cuisine: Danish
Keyword: butter, buttery, classic, croissant, danish pastry, fastelavn, flaky, hazelnut, remonce, salted caramel, traditional, vanilla, vienna bread, viennoiserie, whipped cream
Difficulty: Advanced

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  1. 5 stars
    These have the perfect amount of caramel, and the texture combination with the nuts is awesome!

5 from 3 votes (2 ratings without comment)

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