Name: Biscoff Flapjacks
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Ingredients: 350 g Porridge oats; Pinch of salt; 175 g Butter (unsalted); 100 g Golden syrup; 75 g Light brown soft sugar; 200 g Biscoff spread (smooth); 25 g Biscoff spread (smooth, warmed); 1 Biscoff biscuit (crushed)

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Flapjacks are so simple and easy to make, and they're delicious oaty snacks. These Biscoff Flapjacks are levelled up with a generous helping of Biscoff spread, for so much gorgeous caramel flavour! They are quick to make with only six ingredients, and they make a fantastic snack for lunchboxes, long walks and picnics.

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Ingredient Tips & Equipment Information

I used unsalted butter for the flapjacks, you can also use a baking spread like Stork, or a dairy free spread.
I really recommend using light brown soft sugar if you can for the flapjacks, but if you can't get hold of it, caster sugar will work too.
Golden syrup is sold all over the world, so check the international section in your supermarket if you're not based in the UK. You can also buy it online from Amazon (see link in my recommended ingredient section further below). If you can't get hold of it, you can replace it with maple syrup or honey.
You need to use the smooth Biscoff spread for this recipe.
Although I provide cup measurements, I highly recommend weighing your ingredients out using digital kitchen scales. It is the most accurate way to measure ingredients and will ensure the best results. Digital scales are very low cost and can be purchased for around £12 ($16.50).
For teaspoon (tsp) and tablespoon (tbsp) measurements, please use measuring spoons and not the type of spoons you eat with. Again this will ensure accuracy and provide the best results.

For the full recipe with measurements, head to the recipe card at the end of this post.

How to make Biscoff Flapjacks

Add the porridge oats and salt to a bowl and stir together. In a pan on a low heat, melt together the butter, light brown soft sugar, Biscoff spread and golden syrup. Whisk them together well to fully combine them, as the butter has a habit of separating.

Pour the melted butter and sugar mixture into the oats and stir until the oats are fully coated. Put the mixture into a greased and lined tin and press it down with a silicone spatula to smooth out the top and create an even finish. Bake for 20-25 minutes until they are golden all over. Leave them to cool completely in the tin, then remove from the tin and use a sharp knife to cut it into squares.

For the full recipe with measurements, head to the recipe card at the end of this post.

What kind of oats should you use?

For these flapjacks I used standard porridge oats (also known as scottish oats or rolled oats). They do not have any additional ingredients, so make sure not to get them confused with instant oatmeal which has added sugar and milk powder.

How long do the flapjacks last and can they be frozen?

They'll keep for up to 1 week in an air tight container - if they last that long! They can be frozen, wrap them well or freeze in an airtight container.

Can these flapjacks be made gluten or dairy free?

Unfortunately Biscoff spread is not gluten free, so you cannot make this recipe gluten free using Biscoff spread. For a dairy free version, replace the butter with a dairy free block butter alternative. Please do check the labels for everything you use to make the flapjacks if you are serving it to someone with an allergy or intolerance.

Why are they called flapjacks?

A flapjack is a baked oat bar that is a classic British bake. They are similar to granola bars and cereal bars. The "flap" part means a flat cake and the "jack" part means something common or ordinary. This could be in reference to the very simple method and basic ingredients for making flapjacks. In North America, a flapjack is something very different and refers to a type of pancake, so they are known as oat bars, granola bars or oat slices.

What is Biscoff?

Biscoff spread, made by the brand Lotus, is also known as cookie butter. It has a deep caramel flavour and a hint of cinnamon and other spices. Lotus are best known for their biscuits, which are commonly served with coffee. The biscuits are used to make the spread, and you can buy it in crunchy and smooth varieties. The spread is similar to Nutella or peanut butter in terms of texture, but it has a unique flavour. It’s also naturally vegan.

What size tin do you need for this recipe?

This recipe requires an 8 inch (20cm) square tin.

Can you add anything into this recipe?

Yes! Flapjacks are really versatile, so you can add lots of different mix ins, such as nuts, dried fruit and chocolate chips. You can also decorate the flapjacks with a layer or drizzle of chocolate. You can really get creative and adapt the flapjacks in so many ways!

Are flapjacks healthy?

Flapjacks can sometimes be thought of as a healthy snack, but as you may notice from the ingredients they contain high amounts of sugar and butter. While oats do have many nutritional benefits, sugary foods should of course be enjoyed in moderation and as part of a balanced diet.

More tips for making the Biscoff Flapjacks:

The flapjacks will look very loose when they come out of the oven, and won't seem to have set. Let them cool and they will firm up. Don't be tempted to over bake them.
Let the flapjacks cool fully before trying to remove them from the tin, you can pop them in the fridge to speed this up if you're desperate to tuck in!
I drizzled the flapjacks with warmed Biscoff spread, but you could leave them plain, or drizzle them with melted chocolate.

Troubleshooting

My number one tip for getting the best results is to read through this whole page of tips and recommendations before starting, and follow the recipe exactly. If you have any questions about this recipe, or if something went wrong and you need help, please use the comment form below and I will get back to you. You can also get in touch with me on my Twitter, Instagram or Facebook. I'd love to hear from you!

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