Easy Air Fryer Flapjacks
These soft and chewy air fryer flapjacks are a classic British golden syrup oat bake made quickly and easily in your air fryer. Perfect for lunchboxes, snacks or afternoon tea.
Servings 16
Calories 238kcal
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Ingredients
- 225 g Butter
- 100 g Demerara Sugar
- 100 g Light Brown Sugar
- 5 tablespoon Golden Syrup or use honey
- 360 g Oats rolled porridge oats
- 1 teaspoon Vanilla Extract
Instructions
- Preheat the air fryer to 160°C (320°F) and set the timer for 20 minutes. Grease and line a suitable baking tin with nonstick baking paper. I use a 20cm (8") square tin in my air fryer, but you may need to use a different size tin.
- In a large saucepan, melt the butter, sugars and golden syrup together on a low heat, mixing with a wooden spoon to prevent it from sticking to the bottom of the pan.225 g Butter, 100 g Demerara Sugar, 100 g Light Brown Sugar, 5 tablespoon Golden Syrup
- Stir in the oats and vanilla extract.360 g Oats, 1 teaspoon Vanilla Extract
- Spoon the flapjack mixture into the prepared tin and press down firmly with the back of a spoon. Air fry for 16-20 minutes.💡 Pro Tip - the flapjack will still look soft when you take it out of the air fryer but it will firm up on cooling.
- Allow the flapjack to cool in the tin for at least 2 hours (preferably overnight), before cutting them into squares with a sharp knife.
Video
Notes
- Air fryer models vary. Cooking times for air fryer flapjacks may differ slightly depending on your model and basket size. Check from 15 minutes onwards — the edges should be golden and the centre slightly soft.
- Flapjacks firm up as they cool. They may look underdone when removed from the air fryer, but will set as the butter and syrup cool. Leave to cool completely before slicing.
- Press the mixture firmly. Compacting the oats well in the tin helps prevent crumbly flapjacks.
- Tin size matters. A shallow 20cm square tin works well in a Ninja Foodi. If using a smaller tin, the flapjacks will be thicker and may need 2–3 extra minutes.
- Oats choice affects texture. Rolled porridge oats (US: old-fashioned oats) give the best chewy texture. Quick oats create a softer flapjack. Avoid jumbo oats.
- Substitutions. Golden syrup can be replaced with honey or maple syrup, though flavour and texture will vary slightly.
- Storage. Store in an airtight container at room temperature for up to 7 days or freeze for up to 3 months.
Nutritional Information (Approximate)
Calories: 238kcal | Carbohydrates: 37g | Protein: 6g | Fat: 8g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 0.4g | Sodium: 4mg | Potassium: 102mg | Fiber: 2g | Sugar: 18g | Vitamin A: 7IU | Vitamin C: 0.4mg | Calcium: 35mg | Iron: 2mg
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