Biscoff Blondies

Name: Biscoff Blondies
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: ⅓ cup butter (Or 75 grams or 2.5 ounces (You can use exactly the same amount of oil instead if you prefer.)); ½ cup dark brown sugar (Or 120 grams/4¼ ounces); 1 large egg (lightly whisked); 1 large egg yolk; 1 teaspoon vanilla; ⅔ cup Biscoff spread; 1 pinch salt; ¾ cup plain flour (105 grams or 3¾ ounces); ¾ teaspoon baking powder; 3½ ounces chocolate chunks (Chips, chunks or just a bar of chopped chocolate. Plus a few extra to decorate the top. ); 3 Speculoos/Lotus biscuits

By Helen Schofield

on Jul 16, 2021, Updated Apr 25, 2022

58 Comments

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Ever wondered what to do with Biscoff spread, sometimes known as cookie butter? Other than eat it off a spoon? Try these Biscoff blondies and wonder no more! Think gooey butterscotch cookie bars with a sprinkle of spiced biscuit crunch on the top and big chunks of white chocolate inside. All you need is a jar of Biscoff, a few other basic pantry ingredients, and just 30 minutes!

A stack of 3 Biscoff blondies on a wire cooking rack with ingredients in the background and other blondies all around

You know the desserts that always get eaten first at events? Biscoff blondies are definitely one of them.

Incidentally (in case you’re looking for more chocolate traybakes for picnics, parties, BBQs and more!), these peanut butter cheerio bars, these 7 layer pecan bars, this no-bake caramel shortbread and this very yummy hedgehog slice (aka chocolate biscuit cake) fit very nicely into this category too.

But for today, it’s the Biscoff blondies we’re getting all excited about!

Why you’re going to love them
Err… what’s Biscoff?
More about the ingredients
How to make them
When and how to eat them
Variations
More things to know (FAQs)
More blondie and brownie recipes
Biscoff Blondies Recipe

Why you’re going to love them

They’re super easy one bowl blondies. Easier than many brownies. So no dirtying of multiple bowls in the kitchen. No creaming of butter and sugar. Don’t you love those recipes?

They’re great for nut-free households. Biscoff spread is quite similar in consistency to nut butter. These blondies are made in the same way as a peanut butter blondie – but there’s not a nut in sight!

They have a delicious butterscotch flavour that everyone likes, right? They’re buttery, creamy, crunchy, and the perfect mix of chewy and cakey.

You only need 8 simple ingredients (plus baking powder and salt). And they’re ready in just 30 minutes.

If you love the taste of butterscotch, and a perfect mix of chewy and cakey blondies and brownies, these are the stuff dreams are made of.

Err… what’s Biscoff?

You may know it as Lotus or Speculoos or Speculaas spread (the original brand and type of cookie), or just cookie butter. It looks like peanut butter but is made out of European style crunchy caramelised biscuits, originally from Belgium.

If you want to know what it tastes like, the best thing is to buy a jar, eat some straight off a spoon, then make these blondies! But to give you an idea, Biscoff tastes like lightly spiced dark sugar English-style biscuits – but melted.

To the Brits among you… have you ever dunked a ginger biscuit in tea and enjoyed it melting into a delicious goo in your mouth? You know what I mean… 😉

More about the ingredients

After you’ve bought a jar of Biscoff spread and some white chocolate chips, it’s very possible that you already have most of the other ingredients you need to make these.

All the ingredients needed to make Biscoff blondies, labelled including brown sugar, Biscoff biscuits, flour, white chocolate, Biscoff spread, butter, eggs and vanilla

Things you might have to buy:

Biscoff spread: I’ve noticed that lately supermarkets have their own brands of Biscoff. You can also get ‘crunchy’ and ‘smooth’, just like peanut butter! If there’s a choice, go for crunchy! You’ll need about half a cup plus a little more for drizzling over the top. So there’ll be plenty left in the jar to eat off a spoon when no one’s looking.

Biscoff biscuits (sometimes called Speculoos/Speculaas): This ingredient is optional, but I like to sprinkle a few of these crunchy biscuits over the top of the blondies before baking. It makes for the perfect crunch!

White chocolate: Any kind of white chocolate chips will work. I like bigger ones, or you can just use a chopped up bar of white chocolate if you like, although that’s extra work.

Things you might already have:

Butter: You only need a smallish amount of melted butter (about 1/3 cup or 75 grams). Oil works too, but I prefer the taste of butter in these blondies.

Dark brown sugar: I like to use this type of sugar for the best caramel taste, but light brown sugar works too. This is by no means diet food (!) but I find just half a cup of sugar is enough. This is less than in an average blondie recipe because there’s more sweetness from the biscuit spread and white chocolate.

A whole egg, plus an extra yolk: I include an extra egg yolk to make sure the blondies are rich and moist but still have the perfect chewy, cakey structure.

A bit of plain flour and baking powder: You’ll need around 3/4 of a cup of flour and 3/4 teaspoon of baking powder for the perfect rise.

Vanilla and salt: Just a little of each, to bring out the caramel-y flavour even more.

How to make them

Collage of 4 images showing the first 4 steps to making Biscoff blondies starting with melted butter and then adding in all the other ingredients

Step 1: This is my favourite kind of baking. All in one bowl! Just melt the butter in a big bowl in the microwave (or over a pan of steaming water if you prefer).

Step 2: Whisk in the sugar, eggs, vanilla, and Biscoff spread until smooth.

Step 3: Stir in the flour, salt and baking powder. As always with any kind of cake, don’t overmix!

Step 4: Fold in the chocolate chips!

Collage of 4 images showing the last steps to making Biscoff blondies: Smoothing the batter into the pan, decorating and baking

Step 5: Line a square pan (8×8 inch or 20x20cm) with baking paper. You don’t have to do this but it makes getting the blondies out of the pan super easy. Then smooth the batter into the pan.

Step 6: Drizzle the top with a little extra warmed cookie butter (just heat it in the microwave for 10 to 15 seconds).

Step 7: Press a few broken up Biscoff/Speculoos biscuits into the top for a bit of crunch. I like to press a few sneaky extra white chocolate chunks on the top too!

Step 8: Bake! They should be ready in around 20 minutes. The edges will start to pull away from the sides just a little, and the top will start to look crinkly.

Pro tip: If you can bear to wait, the blondies are easier to slice if you let them cool completely first. But who’s going to complain if you serve them warm with vanilla ice cream and extra Biscoff on top? 😉

Biscoff blondies on baking paper from above, with someone holding up one above the others on a flat knife

This a perfect recipe for making with kids!

When and how to eat them

Biscoff blondies are great eaten just as any respectable blondie is eaten. Wait until completely cold (if you have the willpower!), then slice into squares and enjoy!

They’re great for parties, baby showers, Easter, picnics, BBQs or any other special event. As I said, they get gobbled up fast!

But there are a couple of other fabulous ways to enjoy them. If you like, serve while still warm with a sneaky scoop of vanilla or caramel ice cream and perhaps more warm Biscoff on the top. This would make a great dessert for a dinner party, don’t you think?

I came up with this final idea by accident. I wanted to give some of the blondies to a friend but didn’t have quite enough for the whole family. So I sliced them into tiny little squares, packed them into a small tub lined with baking paper and called them Biscoff white chocolate blondie bites!

Variations

The blondies are delicious as they are.

But by all means, make them your own! Replace the white chocolate with milk or dark, or throw in caramel chips, M&Ms, or other sweet treats instead.

You can even throw all caution to the wind and replace the Biscoff with peanut butter. You’ll then end up with peanut butter blondies rather than Biscoff blondies, but who cares as long as they’re delicious?

More things to know (FAQs)

Which isle can I find Biscoff spread in at the supermarket?

I usually find it right next to the peanut butter, Nutella and other breakfast spreads. Failing that, have a look in the bakery isle.

Where can I buy Lotus/Speculoos biscuits?

These biscuits are are sold in the major supermarkets here in Australia. I’ve also seen them in Aldi – they’re called European spiced biscuits.

If you can’t find them where you live, no worries! You can either skip them altogether, or just use another kind of dark, crunchy biscuit. Any kind of caramel, ginger or dark and buttery crunchy biscuit will work well. You only need a few!

How do I know when the blondies are cooked?

They’re cooked when the top is starting to look slightly crinkly and the batter is pulling away from the edges of the pan.

A skewer inserted into the centre will come out with a few sticky crumbs on it, but the batter shouldn’t look raw.

How long do they keep, and can I freeze them?

These blondies will keep well for at least 3 days in an airtight container. If you keep them in the fridge they’ll keep for even longer – at least a week – and they’ll be a bit firmer and fudgier.

They freeze well, too. Let the blondies cool completely, then wrap really well in plastic wrap and/or aluminium foil or a sealed container. You can either freeze the whole pan or slice them into squares first and freeze.

They’ll keep well in the freezer for at least 3 months.

Are these just for people with a really sweet tooth?

You might be surprised, actually! I reduced the sugar in my original recipe to just half a cup. I figured there is already sugar in the Biscoff spread and white chocolate. Instead I added an extra egg yolk and a little more flour for a nice mix of cakey and chewy texture.

Don’t get me wrong, these certainly aren’t diet food! But they aren’t as sweet as you may expect. Each blondie contains around 200 calories, which is less than an average blondie or brownie.