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Vegetarian & Vegan · Recipe Guide

Air Fryer Flapjacks, Chewy and Golden

Chewy, golden oat flapjacks in under 20 minutes — a classic traybake, no big oven needed.

Flapjacks are one of the easiest bakes going — oats, butter and golden syrup pressed into a tin and baked chewy. The air fryer does a small batch in under 20 minutes. Here's how.

Key takeaways

Q: How do you make flapjacks in an air fryer?

A: Mix oats with melted butter, sugar and syrup, press into a lined tin, and air fry at 160°C (320°F) for 15–18 minutes.

Q: Why let them cool before cutting?

A: They firm up as they cool — cut warm and they crumble.

The method

Melt butter with golden syrup and sugar, stir in the oats, and press firmly into a lined tin that fits your basket — pressing well is what keeps them together. Air fry at a moderate heat until golden at the edges but still slightly soft in the middle, then cool fully in the tin before cutting.

The recipe

Air Fryer Flapjacks

10 minPrep
16 minCook
8Makes

Ingredients

  • 200g porridge oats
  • 100g butter
  • 80g brown sugar, 2 tbsp golden syrup
  • Pinch of salt

Method

  1. Melt butter, sugar and syrup; stir in oats.
  2. Press firmly into a lined tin.
  3. Air fry at 160°C for 15–18 minutes.
  4. Cool fully before cutting.
210 kcal 3g protein 26g carbs 11g fat 0.2g salt

Tips

  • Press firmly so they hold together.
  • Cool before cutting — they firm up.
  • Add seeds or fruit for variety.

Frequently asked questions

How do you make flapjacks in an air fryer?

Mix oats with melted butter, sugar and golden syrup, press firmly into a lined tin, and air fry at 160°C for 15–18 minutes, then cool before cutting.

Why do my flapjacks fall apart?

Usually they weren't pressed firmly enough, or were cut while warm. Press the mixture down well and let them cool fully in the tin first.

Can you make them vegan?

Yes — use a plant butter and maple syrup in place of butter and honey-based syrups.