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Flapjacks That Are Gooey, Moist And So Soft
This right here is my popular gooey flapjack recipe; it’s moist, soft and chewy all at the same time! It’s a big hit amongst you, and I love this recipe so much too. Plus, I’ve updated the pictures!

Whenever I think of flapjacks my mind goes right back to my childhood, making easy flapjacks that tasted delicious. The texture melted in your mouth and the top layer was ever so crunchy. So, I just had to recreate it!
But I didn’t stop there; I’ve made lemon flavoured flapjacks, Biscoff flapjacks and chocolate flapjacks too. In fact, I have a whole flapjack category because I can’t stop making them. Oh, and I can’t forget these delicious cherry bakewell flapjacks (they deserve a shout-out too)!
That being said, this recipe has to be my best yet, it’s plain but it’s a really big reader favourite. It’s perfect for those of us who love sticky, soft and gooey types of flapjacks (you definitely need a sweet tooth for this).

Flapjack Recipe Ingredients
I’ve listed the 4 ingredients needed below:
- Golden Syrup: Golden syrup is best to use when making flapjacks.
- Butter: You can use salted or unsalted butter; both are fine to use. I like to use salted butter as it adds a slight saltiness to the flapjacks. Stork also works great.
- Light Brown Sugar: Light brown sugar is melted with butter and golden syrup; it adds an extra caramelised sweetness (as if it wasn’t sweet enough).
- Porridge Oats: We can’t make flapjacks without oats; any brand of oats will do (value packs work great too).
Can I Use Honey Instead Of Golden Syrup?
Yes, they’re both similar in texture but the taste differs, golden syrup has a caramel-like flavour to it, which I prefer. I have a post on golden syrup alternatives.
How To Make The Best Gooey Flapjacks
Ready to tuck into some gooey flapjacks? Here’s a summary of how I make it, you can get the full instructions in the recipe card below:






The first step is to melt butter, light brown sugar and golden syrup together. I like to do this in the microwave on a medium to high heat.
I then mix the oats into the melted mixture and mix it together using a wooden spoon. The mixture will be quite moist and wet, that’s the perfect texture for gooey flapjacks.
Pour the flapjack mixture into a lined baking tin, I used a 9″ square baking tin from Amazon. I spread the mixture evenly into all four corners and bake it for 20 minutes, the flapjacks will be slightly brown, and you’ll notice that the corners are slightly darker and sturdier.
Once the flapjacks are baked, I leave them to cool down before cutting them into squares.
My Top Tips For Making Gooey Flapjacks
Don’t skip lining your baking tin with parchment paper! I used to avoid this step but really it makes removal so much easier. I always leave parchment paper hanging over the sides to easily lift the whole flapjack out.
It’s very likely that the corners and edges will darken more than the middle, this is normal don’t panic! With just 20 minutes in the oven, the colour difference won’t be so strong. The middle section will give you the gooiest slices; which is always my first choice!
Once out of the oven the flapjacks will be very soft but don’t worry, they are not undercooked. Leaving the flapjacks to cool down will allow the flapjack mixture to harden.
Jumbo oats increase the chances of your flapjacks falling apart as they are larger, and we don’t want that! If you only have jumbo oats, you can use them, a great tip is to blend some of the oats in a food processor to get smaller pieces. This will help the flapjacks stick together.

How To Store & Freeze Flapjacks
If there’s any flapjacks left to store (they go quite quickly in my house), keep them in an airtight container at room temperature for up to 3 to 5 days.
To freeze them, simply cut the flapjacks into squares or your desired shape and place it in an airtight container or freezer bag. It’s best to line each layer with parchment paper to avoid layers of flapjacks sticking together. To defrost the flapjacks, take them out of the freezer and leave them to thaw at room temperature.
Equipment Needed
There’s no special equipment needed to make this recipe, it’s quite simple and very easy to make. If you don’t have these tools below already, you’ll likely need them:
- 9″ square baking tin
- Wooden Spoon
- Mixing Bowls
- Parchment Paper
More Must-Try Easy Recipes
Nothing is better than easy desserts that require minimal effort and minimal ingredients. Below are a few of my favourite simple desserts for you to try:
- Chocolate Chip Flapjacks
- No-bake Kinder Bueno Cheesecake
- No-bake Chocolate Tiffin
- Chocolate Concrete Cake
