Preheat your oven to 180°C (160°C Fan, gas mark 4) and line a baking tin with parchment paper.
Add butter, peanut butter, golden syrup and light brown sugar to a large mixing bowl and melt in the microwave on a medium heat.Every 10 to 15 seconds stop the microwave and give the mixture a stir. Repeat this until the mixture has fully melted.
250 g Margarine, 150 g Peanut Butter, 150 g Golden Syrup, 150 g Light Brown Sugar
Add porridge oats to the melted mixture and mix together until thoroughly combined. Make sure all the oats are generously coated.
400 g Porridge Oats
Pour the flapjack mixture into the lined baking tin and spread it evenly into all four corners. With the back of a spoon, press the flapjack mixture down.
Bake in the oven for 20 minutes or until the edges have turned golden brown. Once baked, leave the flapjack to cool down before cutting it into slices.
Video
Notes
TIP: If you see spots of white oats in your flapjack mixture, then it hasn’t been mixed thoroughly enough. It should take on the golden-brown colour of the melted syrup when mixed thoroughly.
Flapjacks Harden As They Cool
Yes, they do! Flapjacks are quite soft when freshly taken out of the oven. As the flapjacks are left to cool down they harden. That’s why it’s important to cut flapjacks when they are cold as they’re less likely to break apart.