Chocolate hazelnut crunch bar with feuilletine

Oh dear something as addictive as macarons and needed to be available in the fridge at all times! I’m just glad these are super easy to make and can be whipped up within the hour. Didn’t even need to use the mixer.

What makes these chocolate bars so irresistible? Two things: the hazelnut taste and the biscuit crunch. Devine combination, if you ask me.

If you are unsure what ‘feuilletine’ is, here’s a photo of them. A pile of crunchy ‘leaves’. These are quite hard to source – I’ve found recipes for making them so would be giving that a try next. In its place you can use Gavottes crepes or by crumbling waffle ice cream cones. It will be similar in taste and texture.

Regarding the hazelnut-chocolate combination, you can certainly change it to suit your latest cravings. I know I would be trying peanut butter, salted caramel, macadamia butter, almond cacao and also peppermint to name a few.

You can dress the bars up with whatever you like: a dusting of cocoa powder; hazelnut; hazelnut praline crunch; fresh-dried berries. Or left naked. Your options are endless which makes this an ideal ‘bring-a-dessert’ that *potentially* satisfies everyone.

Makes one square 20cm x 20cm tray, cut bars sized to your liking. I got 39 (3 rows of 13 bars of about 1.5 cm by 8cm)

For the crunchy Bottom layer:

  • 250g milk chocolate (33% cacao), melted
  • 100g roasted hazelnut paste
  • 125g (about half cup) chocolate-hazelnut spread (or any nut butter butter you prefer)
  • 140g (2 cups) feuilletine (crunchy leaves) or cocoa pops

For the filling:

  • 300g dark chocolate (70% cacao) broken into small pieces
  • 300ml cream
  • 50g unsalted butter, cut into small cubes


  1. For the bottom layer, line a square tray with 2 pieces of baking paper, with the paper hanging over the sides of the tray. (This will help you lift the slab off from the tray effortlessly.)
  2. Melt milk chocolate over a pot of simmering hot water. Once smooth, add the roasted hazelnut paste and chocolate-hazelnut spread; stir until smooth.
  3. Fold in the feuilletine until the chocolate is combined with the flakes (It should look like a mess!) Scoop the chocolate mixture to the prepared tray. Press the mixture down into a smooth, even layer. Let it chill in the fridge while you make the filling.
  4. To make the ganache, place the broken chocolate pieces in a heatproof bowl. Heat the cream till it is just simmering and pour over the chocolate.
  5. Shake the bowl a little and let this sit for about 2 minutes, this is so that the chocolate melts smoothly, avoiding any lumps in your final product.
  6. Add the cubed butter and whisk until ganache is smooth. As you whisk, the cream will magically homogenize with the melted chocolate to form a shiny smooth, pourable ganache.
  7. Pour the ganache over the feuilletine and smooth with a spatula. Leave in the fridge to set, about 1 – 2 hours.
  8. If you want to decorate with toppings, add them in after 30 mins of the ganache being poured to allow the toppings to stay on the surface and not sink. Whole hazelnuts, hazelnut praline crunch or anything you wish! Slice into bars before serving.

*if you prefer a sweeter bar, you can make your ganache with a combination of dark and milk chocolate. The total chocolate to cream ratio will need to be altered for the ganache to work, to about 1: 0.8. (for example, 100g total chocolate to 80g cream.) This ratio will work if you keep the milk chocolate in a smaller proportion to the dark chocolate. I would suggest for 200g dark chocolate and 100g milk chocolate to 300ml cream.

Styled by my little chef.

6 Comments Add yours

  1. Anita Rodobolski says:

    I will be attempting your chocolate hazelnut crunch bars with feuilletine and have a few questions; Please advise what size square pan you used. Was it 8”?
    Does the ganache remain soft enough that sprinkled toasted nuts will adhere once bars are cooled and cut or do they have to be added when ganache is first poured?
    Also how far in advance can these be made? Thank you…I’ll leave a comment once made and devoured 😊 Thank you for your answers and guidance!!

    1. michtsang says:

      Sorry for the long overdue reply! The comments were hidden for some reason – hope you’ve had success with this beautiful bar. My square pan was a 9″, but you can use a long rectangular slice container as well.
      Any toppings should be added after the ganache has slightly set, 30.mins. It won’t stick if they are added after the ganache has fully set.
      I’ve made these 2 days in advance with no issues.
      Hope you are well!

  2. Lara London says:

    This looks amazing! Chocolate hazelnut crunch bar w/feuilletine. Please advise what size pan did you use for this recipe? And what is the total prep time? Thanks.

    1. michtsang says:

      Hiya, the square tray is about 22cm by 22cm. Prep is about an hour

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