Banana & Hazelnut Cookie Crisps w/ Chocolate-Hazelnut Filling

17 Comments / Cookies

One of the most annoying things I have to deal with daily is my weird inability to get over things quickly or easily.

I don’t even know why it happens!

“Okay Izy, you used the wrong leg in Yoga, it’s fine, no one was staring at you.”
“Yes, you totally did just trip on that last stair at the tube station, but everybody trips up on stairs!!”
“Mmmhhhmm, your oyster card is still not working properly and now there’s a queue of people behind you trying to get on the bus. Just literally KEEP CALM AND CARRY ON IZY.”

The only way I can relax is when I forget the incident ever happened, which I eventually do.

But alas, my brain is like a friend who brings up stupid things you did in the past, just to aggravate you.

This usually happens when I’m trying to get to sleep;

“My mind is blank, think about nothing. Nothing. Quiet. Sleep, sleepy..slee…OH HEY!! YOU TRYING TO GET TO SLEEP? I CAN TELL YOU A GOOD-NIGHT STORY: REMEMBER WHEN YOU USED THE WRONG LEG IN YOGA! AHAHAH, THAT WAS SOO EMBARRASSING!! NIIIIGHT 😀 ”

Oh jeez. Then, instead of being satisfied by sending me into my worrying-spiral with one story, my brain actually works OVERTIME to remember anything else ’embarrassing’ that happened recently. It’s like I’m trying to run away while my brain throws bad memories at me.
and that is my life.
So yeah, that wasn’t related to these Banana, Butterscotch & Hazelnut Cookie Crisps with Bittersweet Chocolate-Hazelnut Filling, at all. I just thought you’d like an entertaining story so you don’t ever have to feel bad about your brain (unless other people’s brains do this to them too! In which case, HIGH FIVE).
Anywho, these are thin, crispy, melt in your mouth banana cookies (kinda tuile-like), topped with chopped hazelnuts. The batter has brown sugar in it, making the cookies have that butterscotchy flavour, and a little bit of chew in the middle.
As the cookies are quite sweet, I recommend keeping the filling quite bitter to off-set it (You can use nutella or melted bittersweet chocolate as the filling instead if you like). The unfilled cookies will stay crisp in an airtight container; however, they start becoming softer and chewy once filled, so I recommend filling them just before eating! (they should stay crisp if you fill them with melted bittersweet chocolate though)

Banana, Butterscotch & Hazelnut Cookie Crisps with Bittersweet Chocolate-Hazelnut Filling

Makes around 12 sandwich cookies (24 crisps)

1/4 cup (2 oz / 55g) light brown sugar, packed
1 tbsp butter, melted
2 tbsp neutral oil
1 egg white
1 ripe banana, mashed (about 1/3 cup)
1/4 cup (4 tbsp / 32g) all purpose flour
pinch of baking soda
pinch of salt
1 tbsp + 2 tsp milk
1/2 tsp lemon juice
(optional: 1/4 cup toasted skinned hazelnuts*, chopped)

Preheat your oven to 250 degrees F (130 degrees C) and line a cookie tray with a non-stick baking mat or with well buttered parchment paper**.

Chuck all the ingredients into a food processor or blender and blitz until smooth. Take a teaspoon of batter and blob onto the tray.

Using the back of the spoon, moving it in a circular motion, spread the batter into a circle, around 2 1/2 inches in diameter. Repeat with more batter, spacing the circles 1/2″ apart (the batter doesn’t really spread). If using nuts, sprinkle them on top of the batter now. Bake for 17-20 minutes until completely browned. Let cool on the tray a little, before transferring to a wire rack to cool completely. Store in an airtight container.

When ready to eat, fill with chocolate-hazelnut filling (recipe follows) , nutella or melted bittersweet chocolate.

Chocolate-Hazelnut Filling

1 tbsp butter
1 tbsp hazelnut butter
1 heaped tbsp cocoa powder
2-4 tbsp powdered sugar (to taste)
1-3 tsp milk
Cream butter, hazelnut butter, cocoa, 2 tbsp powdered sugar and 1 tsp milk in a small bowl. Add more powdered sugar / milk to make thicker / thinner consistency (respectively) until you get a spreadable consistency. Spread 1/2 tsp of the filling onto the underside of one cookie, and sandwich together with a second cookie.

* You can also use toasted, chopped pecans or walnuts instead of hazelnuts. To toast hazelnuts, put on a cookie tray and roast in the oven for 10 minutes at 250 degrees F. Transfer hot hazelnuts to a clean, dry kitchen towel and rub together to remove the skins. 

**To butter parchment paper, melt 3 tbsp of butter, then use a pastry brush to cover the whole piece of parchment. If it isn’t well greased, the cookies will probably stick.

***Alternatively, you can: 

  • use an immersion blender in a large bowl, or 
  • make sure the banana is well mashed and mix all the ingredients well with a whisk until smooth.

17 thoughts on “Banana & Hazelnut Cookie Crisps w/ Chocolate-Hazelnut Filling”

  1. M e k i

    I hope I was the only one. The smallest things drives me crazy. it also happens before i asleep and i think about all those things all over again, ending up getting up again on the computer or doing something else late at night!

  4. Bee

    really interesting recipe 😉 sounds great for me- I love bananas, chocolate and hazelnuts ;D

  5. Katie

    I can so relate! When I’m lying in bed and I think of something really dumb I did, I literally GROAN and cringe, like “oh my god I can’t believe I did that!”

    These look and sound amazing!

  6. Irene

    I really love it how you always make your own recipe up! And these cookies sound great too, will try to whip up a batch sometime!

  8. wallflourgirl

    The only thing worse than a brain that reminds you of all the dumb things you ever did are friends who remind you. You can’t punch your own noggin, but it’s sort of a legal hazard when somebody else brings it up, and then your knuckles start itching for sandwich-making time. By the way, thought you might like this–I spend *way* too much time on this site… http://www.keepcalm-o-matic.co.uk/

    Thanks for sharing another fantastic recipe!

  9. Patricia Scarpin

    These cookies look amazing! I love sandwich cookies but don’t bake them very often.
    Beautiful!

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  11. katerina

    Your blog is adorable! Congrats for the great job 🙂 Absolutely stunning videos and photos. Congrats again dear!
    xxxFiC.

  12. Ashley

    These look and sound OUTstanding. I can’t believe how thin they are. I bet they are so buttery + crispy and just plain delicious with that filling. Well done! 🙂

  13. Farah

    I made these cookies twice now. I screwed it up both times.

    How thick is the batter supposed to be? Mine comes out a milkshake consistency and that doesn’t feel right.

    1. Izy

      I’ve only made them once, but I remember making the batter really thin so that the cookies would get thin and crisp, like super thin tuile batter basically.
      Did you bake the batter that you made?

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  15. Mary

    Taste delicious but mine did not come out crispy, more chewy. Any idea where I might have gone wrong? I even tried baking them an extra 15 min and they were still soft not crispy.

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