Rolled Oat Flapjacks with Golden Syrup

Introduction

These flapjacks use rolled oats, light brown sugar, butter, and a dessert spoon of golden syrup to make dense, chewy bars with browned edges. You melt the butter and sugar together, stir in the oats, and bake the mixture in a 7½-inch square tin for 40 minutes, which makes this a straightforward bake for snacks, lunchboxes, or a keep-on-hand tin cake.

Recipe Details

• Prep Time: 10 minutes
• Cook Time: 45 minutes
• Total Time: 55 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 note and a slightly darker finish.
• Replace the golden syrup with honey for a lighter flavor; the bars will be a little less classic in taste and may set slightly differently.
• Use half rolled oats and half jumbo oats to make the texture rougher and more substantial.
• Replace the butter with a firm plant-based baking block in the same amount to make the flapjacks dairy-free; the texture stays close, though the flavor is less rich.

Tips for Success

• Melt the butter, sugar, and golden syrup only until smooth; if you let it boil hard, the finished flapjacks can turn dry and brittle.
• Press the oat mixture firmly and evenly into the tin so the bars hold together and bake at the same rate.
• After 40 minutes, look for light browning around the edges rather than waiting for the whole surface to look dark.
• Cut the flapjacks after the 10-15 minute cooling period while they are still warm enough to slice cleanly.
• Leave them fully cold before removing from the tin, or the centre can break apart.

Storage and Reheating

Store the flapjacks in an airtight container with layers separated by baking paper. They keep at room temperature for up to 5 days, in the fridge for up to 1 week, or in the freezer for up to 2 months.

For freezing, wrap the bars individually or place them in a freezer-safe container with baking paper between layers. Thaw at room temperature before serving.

These are usually eaten at room temperature, but you can reheat a bar in the microwave for 10-15 seconds to soften it slightly. For a batch, warm them in a low oven at 150°C for 5-7 minutes.

FAQ

Can you use quick oats instead of rolled oats?

You can, but the texture will be softer and less chewy. Rolled oats give the bars more structure.

Why did the flapjacks crumble when you cut them?

They were likely either under-pressed in the tin or removed before they were fully cold. Cutting after 10-15 minutes and then cooling completely helps them set.

Can you make these without golden syrup?

Yes, you can use honey as the closest simple substitute. The flavor changes and the texture may be a little less sticky and cohesive.

Can you bake these in a different tin size?

Yes, but the thickness and baking time will change. A larger tin gives you thinner flapjacks that bake faster, while a smaller tin makes thicker bars that need longer.