How to make the perfect flapjacks, Irish mammy-style (2024)

I am not a chef, but I can pinpoint the day I became a cook. I was four years old standing on yellow vinyl tiles in our 1970s kitchen with painted orange walls. I was making flapjacks. With a sky blue plastic bowl in an arm lock, I wielded a spatula through the oat flakes. My senses were filled with the heady aroma of warm golden syrup. I was hooked.

It was the beginning of an obsession with cooking. I made those flapjacks through my teens, until I realised my childhood recipe was slightly unusual (containing a mixture of cornflakes and oats).

I have always been surprised how few recipe books contain a basic flapjack recipe – the plain kind an Irish Mammy makes. Mea culpa! I have published fruity flapjacks, nutty ones and even free-from versions, but never a straight-up, unadulterated flapjack recipe.

My sister has a wonderful aptitude for consigning recipes to memory. This is her simple flapjack recipe that I scribble down after I call her for the hundredth time, promising I am definitely going to keep this one in a safe place. There are flapjack recipes scrawled on the back of envelopes all over my house. When she texts me “I can’t talk right now”, I know she is on a conference call and those things go on for hours. SoI guesstimate the ingredients, using the judge-by-eye method.

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No one wants to start baking when faced with more than half a pound of butter staring at them straight on. So, I usually start with 200g of butter, a little less flour and sugar, up the oats, and not too much golden syrup.

I have a few noteworthy secrets that create my ultimate flapjack. I think flapjacks need a little flour, well quite a bit actually, otherwise the biscuit is too greasy. I am a stickler for how much golden syrup is, or is not, required. Professionals tend to adjust this recipe, increasing the quantity of golden syrup to create a more “saleable” uniform square (with a distinctly less crumbly texture). For me, too much golden syrup makes them hard to bite through and dunking is simply not an option with flapjacks. Golden syrup can also make flapjacks sickly sweet.

Cooking times and oven temperature are important. Once the flapjacks start to colour around the edges, only minutes remain before the entire surface is golden. It is crucial to reduce the oven temperature after this golden colour spreads, so the edges don’t burn while the centre continues to cook through.

Squares (or fingers if you choose) should be marked out while the flapjacks are still warm and left inside the tin to cool. It will be a relief to my sister once this recipe is immortalised online. I can finally start recycling all those envelopes.

FLAPJACKS

Ingredients
Makes 9
250g medium porridge oats
150g plain flour
200g butter
150g caster sugar
3tbsp golden syrup (about 45ml)
½tsp vanilla extract

Method
Preheat oven to 180°C fan.

Place the porridge oats and flour in a large wide mixing bowl. Stir to combine.

Heat the butter and sugar in a small saucepan over a medium heat. Stir without allowing the mixture to boil. Once the sugar is fully dissolved and blended with the butter to give a smooth consistency, stir in the golden syrup and vanilla extract.

In two batches, pour the hot liquid over the dry mixture, stirring well between additions. The oats should be fully coated and moistened.

Transfer the mixture into a square baking tin (approx 20cm x 20cm) and bake on the middle shelf of the preheated oven for 20 minutes by which time the edges should be starting to turn golden. Continue to bake at this temperature for a further 5 minutes or until the centre top turns golden(keep an eye on the edges and if they start to darken too much, reduce the oven temperature straight away),

Once golden, reduce the oven temperature to 160°C fan and bake for another 5 minutes.

Once baked, remove from the oven and set aside for 10 minutes, then use a serrated knife to mark out nine squares, before gently slicing through the markings and leave the flapjacks in the tin to cool completely until firm.

Variation
For a larger rectangular tin, either increase the ingredients by 1½ times, or shape mixture into a square, then barrier with parchment paper and a heavy object inside the tin.

How to make the perfect flapjacks, Irish mammy-style (2024)

FAQs

Why do my flapjacks always fall apart? ›

Why do my homemade flapjacks fall apart? This can happen if you overcook or undercook your flapjacks. When you overcook a flapjack, the golden syrup dries out and it becomes crumbly. An undercooked flapjack will have a raw doughy texture that doesn't hold its shape.

What happens if you put too much syrup in flapjacks? ›

For me, too much golden syrup makes them hard to bite through and dunking is simply not an option with flapjacks. Golden syrup can also make flapjacks sickly sweet. Cooking times and oven temperature are important.

Why is my flapjack not chewy? ›

Golden syrup is the chewiness activator in a flapjack recipe, so if you want extremely chewy results, add an extra half a tablespoon to this recipe, with 5g less caster sugar. When the flapjacks are pale golden and still very soft to the touch, remove them from the oven.

What is the best tray to make flapjacks in? ›

It's worth spending time smoothing the mixture in the tin with the back of a wet tablespoon to ensure the finished flapjacks are firm and don't crumble to pieces. An 8 inch (20cm) square glass or ceramic baking dish makes a fantastically efficient baking tin.

How to make flapjacks stay together? ›

Line the tray with a piece of baking parchment, scrunch it into a ball first, then open it up again to help it push into the corners. Put half the oats in a Nutribullet, blender or food processor and blend until they form a fine flour. This helps the flapjacks stick together so don't skip this stage.

How to stop crumbly flapjack? ›

After five minutes cooling, press the flapjacks with something heavy and flat (this compresses them and stops them falling apart). Cool on a wire rack. Cut into squares. They will keep for a week to 10 days in an airtight container and freeze really well.

Should flapjacks bubble in the oven? ›

The flapjacks are cooked once the edges are golden and only the middle wobbles. They may look slightly bubbly on top, this is normal. If you overbake the flapjacks they will be hard and crumbly, rather than soft and chewy.

Do flapjacks harden as they cool? ›

Your flapjack will not look completely baked when you remove it from the oven. Due to the nature of the ingredients, they will still be quite melt-y, but don't worry – it will set as it cools down.

Why is my flapjack rubbery? ›

The lumps form because flour contains gluten, a sticky substance that activates when it gets wet and mixed. If gluten is over-mixed it becomes tough, rubbery, and unappetizing.

Do you cut flapjack hot or cold? ›

Do you cut flapjacks when they're hot or cold? Mary Berry suggests allowing the flapjacks to cool slightly before removing them from the tin and cutting them. I personally find it a bit easier to wait until they have cooled completely and hardened before removing them.

Why did they stop making flapjack? ›

Cartoon Network's reasoning for canceling the show was because Flapjack didn't match with its new lineup of shows for a young male-targeted demographic. The inspiration from The Marvelous Misadventures of Flapjack was obvious within the world of cartoon animated shows for the next 10 years.

How often should you water flapjacks? ›

How often to water your Flapjacks. Flapjacks needs 0.8 cups of water every 12 days when it doesn't get direct sunlight and is potted in a 5.0" pot.

What is the American equivalent of flapjack? ›

In the US, a flapjack is a less common way of saying "pancake"; in the UK, it's a chewy, sweet granola bar.

How long will homemade flapjacks keep? ›

Run a knife round the edge to release the flapjack, leave for 5 minutes, then mark into bars or squares. Leave in the tin until nearly cold before cutting into pieces and removing to a wire rack. The flapjacks will keep in an airtight tin for up to 10 days.

Why do my flapjacks stick to the tin? ›

I usually cut my flapjacks while they're warm and still in the tin, then leave them to cool completely in the tin before removing them, and they don't usually stick. I do grease the tin a little bit first though. I line the tin with baking parchment, just a long strip the width of the tin, they lift out easily.

How do you fix hard flapjacks? ›

More fat (butter) is the answer. I use gluten free oats as some of my children are Coeliac and I always had problems with flapjacks being far too hard. I found that increasing the amount of butter over the recipe amount made a lot of difference...

Do flapjacks fill you up? ›

If you want to cut out all fat from your diet then try a low fat flapjack. Leave you feeling fuller for longer – The oats that make up the flapjacks can help you feel fuller for longer than other carbohydrates because they have a low glycemic index — meaning that they cause minimal spikes in blood sugar levels.

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