Oat Flapjacks with Golden Syrup

Introduction

These flapjacks use just four ingredients: light brown sugar, butter, golden syrup, and rolled oats. The mixture comes together on the stove, then bakes for 40 minutes into firm, chewy bars that work well for lunchboxes, snacks, or make-ahead baking.

Recipe Details

• Prep Time: 10 minutes
• Cook Time: 40 minutes
• Total Time: 50 minutes
• Servings: 10

Ingredients

• 110 g (½ cup or 4 oz) light brown sugar
• 175 g (1½ cups or 6 oz) butter
• 1 dessert spoon golden syrup
• 175 g (1½ cups or 6 oz) rolled oats

Instructions

1. Preheat the oven to 150°C (300°F or Gas Mark 2).
2. Place the sugar, butter, and golden syrup together in a medium saucepan and heat until the butter has melted.
3. Remove the saucepan from the heat and stir in the oats.
4. Press the mixture out over the base of a lightly-greased 7½-inch (19 cm) square baking tin.
5. Bake in the centre of the oven for 40 minutes.
6. When baked, allow to cool in the tin for 10-15 minutes before cutting into oblong bars.
7. Leave until cold before removing the flapjacks from the tin, then store in an airtight container.

Variations

• Swap the light brown sugar for dark brown sugar if you want a deeper molasses flavor and a slightly darker finish.
• Replace 50 g of the rolled oats with quick oats for a softer, less chewy texture.
• Stir ½ teaspoon ground cinnamon into the oats for a warmer flavor without changing the structure.
• Add 50 g chopped dried fruit when you stir in the oats for sweeter, softer bars with more texture.
• Bake for 35 minutes instead of 40 if you want a softer centre, or go to 45 minutes for firmer, crisper edges.

Tips for Success

• Heat the sugar, butter, and golden syrup only until the butter melts; prolonged cooking can make the bars greasy or overly hard.
• Stir the oats until every flake is coated so the mixture holds together evenly after baking.
• Press the mixture firmly into the tin, especially into the corners, so the bars slice cleanly.
• Cut the flapjacks after the 10-15 minute cooling period while they are set but not fully hard.
• Leave them completely cold before lifting them out of the tin or they can break at the edges.

Storage and Reheating

Freeze in a sealed container or freezer bag for up to 2 months. Thaw at room temperature until no longer firm.

These are usually served at room temperature, but you can warm one in the microwave for 10-15 seconds or in a 150°C oven for about 5 minutes.

FAQ

Can you use quick oats instead of rolled oats?

Yes, but the texture changes. The bars will be less chewy and a bit more compact.

Why cut the flapjacks before they are fully cold?

They firm up as they cool, so slicing at 10-15 minutes gives you cleaner edges. If you wait until they are fully cold, they are more likely to crack when cut.

How do you know when they are done baking?

The surface should look set and the edges should be lightly browned. They will still feel soft in the centre but will firm up as they cool.

Can you use a different tin size?

Yes, but thickness and bake time will change. A larger tin gives you thinner bars that bake faster, while a smaller tin makes thicker bars that need a few extra minutes.