Skip to content

Lyle’s Treacle Flapjack

 Liked by  4 people

 Loved by  17 people


15 min


40-50 mins






Follow our easy Treacle Flapjack recipe to cook up a batch of these beautifully put together Lyle’s Treacle flapjacks for a filling treat, anytime!

Black Treacle Tin
made using

Black Treacle Tin

View product 
Share this recipe

Treacle Flapjack Recipe

Step 1

Set the oven to 180C (160C fan, Gas 4). Line a 18 x 28cm tin with baking paper.

Step 2

Cut the butter into cubes and place it in a saucepan along with the soft brown sugar and treacle. Place the pan over a low heat and stir until all the butter and sugar have melted.

Step 3

Pour the melted mixture into the oats and mix well. Tip the mixture into the lined tin. Spread into an even layer and press it down firmly.

Step 4

Bake in the centre of the oven for 40-50 minutes, until it’s starting to turn a darker colour around the edges.

Step 5

Remove the tray bake from the oven and mark it into 12-14 fingers, then leave the flapjack to cool in the tin.

Step 6

When cold, use the lining paper to lift the flapjack out of the tin and then cut or break along the marked lines.

Ingredients – 4 items




Cold butter, unsalted

250 g
Fairtrade Light Brown Soft

Light soft brown sugar

250 g

Lyle’s Black Treacle

175 g

Rolled oats

500 g

Rate this recipe!

Share your thoughts or advice

Good job, now enjoy!

Don't forget to share your creation using our hashtags in the chance to get featured.


Our Syrups

Ideal for baking and toppings, and a perfect companion for pancakes and porridge.

View all products