Classic British Flapjacks
The British flapjack is not a pancake — it is a baked oat bar, sweet and buttery, with a golden exterior and a chewy centre. Four ingredients, one tin, thirty minutes. This is the recipe that fills bake sales, school lunchboxes, and coffee shop display cases across the UK. Perfect for Pancake Day or any time you want something satisfying and simple.
Ingredients
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- 300g (3 cups)rolled oats (porridge oats), Use regular rolled oats, not quick-cook oats — they give better texture
- 175g (¾ cup (1½ sticks))unsalted butter
- 4 tbsp (80g) (4 tbsp)golden syrup, Lyle's Golden Syrup is the standard — do not substitute with honey or maple syrup as they behave differently
- 75g (⅓ cup packed)soft light brown sugar
- pinchfine salt
Method
- 1
Preheat the oven to 180°C / 160°C fan / 350°F. Grease a 20x30cm (8x12 inch) baking tin and line with baking parchment, leaving an overhang on the long sides to help lift the flapjack out later.
- 2
Combine the butter, golden syrup, and brown sugar in a medium saucepan over low heat. Stir gently until the butter has melted and the sugar has dissolved. Do not let it boil.
The mixture should be smooth and glossy. Remove from heat as soon as everything has melted together. - 3
Remove from the heat, add the salt, and tip in the rolled oats. Stir until every oat is evenly coated in the buttery mixture.
- 4
Tip the mixture into the prepared tin and spread evenly. Press down firmly and uniformly with the back of a spoon or the base of a glass — a well-compacted flapjack holds together; a loose one crumbles.
Spend 30 seconds pressing; it makes a real difference to the finished texture. - 5
Bake for 20–22 minutes until the edges are deep golden brown and the centre looks slightly underdone — it will firm up as it cools.
For a chewier flapjack, take it out at 20 minutes. For a crispier result, give it the full 22–25 minutes. - 6
Remove from the oven and immediately score into 16 rectangles with a sharp knife. Cut through the top but not all the way through — you are scoring, not slicing.
Score while still hot; once the flapjack cools and sets, it becomes much harder to cut cleanly. - 7
Leave to cool completely in the tin — at least 45 minutes. Once fully cooled and set, lift out using the parchment overhang and break along the score lines.
Patience here is important. A warm flapjack will crumble. A fully cooled flapjack will break cleanly along the score lines.
Pro Tips
- →Do not use quick-cook oats — they absorb too much fat and produce a dense, slightly greasy bar rather than one with good texture.
- →Golden syrup is not optional. Its specific glucose-to-fructose ratio affects how the flapjack sets; substitutes produce different (usually inferior) results.
- →For chocolate-topped flapjacks: melt 100g dark chocolate and spread over the cooled bars before they fully set. Score through the chocolate before it hardens.
- →Add-ins to try: 50g raisins or dried cranberries; 30g pumpkin seeds or sunflower seeds; 50g chopped walnuts or pecans.
Topping Ideas
Terms in this recipe
Defined in the Pancake Day glossary.
Questions & answers
Why are my flapjacks crumbling?⌄
Can I use honey instead of golden syrup?⌄
How long do British flapjacks keep?⌄
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