Discover how to make raspberry flapjacks with a jammy fruit layer and perfectly chewy oats. This easy traybake recipe uses golden syrup, light muscovado sugar, and a pinch of Maldon Sea Salt to balance the sweetness—ideal for lunchboxes, bake sales, or a cosy afternoon tea.
Cook the Raspberry Layer
- Add raspberries, lemon juice, and caster sugar to a medium saucepan.
- Cook over medium heat for 15 minutes, stirring, until berries break down and juices thicken to a jammy consistency.
- Spread on a lipped tray to cool completely; it will thicken further as it cools.
Make the Flapjack Base
- Line a 20cm square tin with parchment paper. Preheat oven to 170C fan.
- Melt butter, light muscovado sugar, and golden syrup over low heat until sugar dissolves.
- Remove from heat, stir in rolled oats and a good pinch of Maldon Sea Salt until evenly coated.
Layer & Bake
- Press two-thirds of the oat mixture into the tin to form an even, compact base.
- Spread the cooled raspberry mixture evenly on top.
- Dot over the remaining oat mixture in clumps to create a pebbled topping.
- Bake in the middle of the oven for about 30 minutes until golden at the edges.
Cool, Chill & Slice
- Allow to cool completely in the tin.
- Chill for 1 hour to set, then lift out and slice into bars or squares.
- Tip: For neat edges, use a long serrated knife and wipe between cuts.
Tips & FAQs
Tips
- For chewier flapjacks: don’t overbake; remove when edges are golden and centre still feels soft.
- Oats: rolled or jumbo oats give the best texture; avoid instant oats.
- Flavour boost: finish with a light sprinkle of Maldon Sea Salt flakes once cooled.
- Faster cooling: 20–30 minutes in the fridge helps set clean slices.
- Festive twist: add vanilla, orange zest, or a white chocolate drizzle; top with freeze-dried raspberries.
FAQs
- Can I use frozen raspberries?
- Yes. Cook from frozen; extend the jammy cooking stage by a few minutes to evaporate excess liquid.
- How do I keep flapjacks chewy?
- Bake until just golden at the edges, cool fully, then chill before slicing. Store airtight to retain moisture.
- What’s the best oat for flapjacks?
- Rolled oats (or a mix of rolled and jumbo) for a chewy, nubby texture; avoid instant oats which can turn pasty.
- Can I make these vegan?
- Yes—swap butter for a plant-based block butter (not spread) in equal weight.
- Can I use raspberry jam instead?
- You can, but use a thick, high-fruit jam and warm it slightly so it spreads in a thin, even layer.
Serving Suggestions
- Serve as afternoon tea squares, picnic bars, or festive traybake bites.
- For extra contrast, finish with a light dusting of Maldon Sea Salt flakes or a drizzle of melted white chocolate.
- Cut into 16 squares for standard portions, or 25 small bites for party platters.
Storage & Reheating
- Room temperature: Airtight container up to 3–4 days.
- Fridge: Up to 1 week; bring to room temp before serving for best chew.
- Freeze: Up to 2–3 months, well wrapped. Thaw overnight in the fridge or 1–2 hours at room temp.
- Re-crisp edges: Briefly chill to firm before slicing; avoid reheating which can dry them out.
