Inside: The easiest flapjack recipe you’ll find – using the microwave to cook instead of the oven.
Flapjacks are a great snack idea for hungry kids but take far too long in the oven for those days you need them now.
I discovered this recipe years ago and now it is one of my favourites, a go-to for those days when we haven’t got much in the house and the kids want a delicious treat.
Ingredients
100g Light soft brown sugar
150g Butter
3 tbsp Golden syrup
200g Oats
You can also add in 150g raisins or chocolate chips if you fancy.

Method
– Melt the butter, sugar and syrup in the microwave for a minute and increase by 30 seconds until melted.
– Stir in the oats.
– Press into a microwavable dish lined with greaseproof paper. The dish has to have high sides as the mixture will rise while it cooks.
– Cook in the microwave on high for 3 minutes, increasing by 30 seconds until done. You want to make sure you don’t overdo them.
– Press the mix down with the back of a spoon when you remove them from the microwave and allow to cool.
– Cut into squares and enjoy!
Quick and Easy Microwave Flapjack Recipe
A quick and easy way to make delicious flapjacks using your microwave. Perfect for a tasty snack!
Ingredients
- 100g Light soft brown sugar
- 150g Butter
- 3 tbsp Golden syrup
- 200g Oats
- 150g raisins or chocolate chips (optional)
Instructions
– Melt the butter, sugar and syrup in the microwave for a minute and increase by 30 seconds until melted.
– Stir in the oats.
– Press into a microwavable dish lined with greaseproof paper. The dish has to have high sides as the mixture will rise while it cooks.
– Cook in the microwave on high for 3 minutes, increasing by 30 seconds until done. You want to make sure you don’t overdo them.
– Press the mix down with the back of a spoon when you remove them from the microwave and allow to cool.
– Cut into squares and enjoy!
I’d love to know if you make them and what you think!
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Louise
Wednesday 6th of May 2026
What size dish would you recommend?
Katy
Wednesday 13th of May 2026
We always use a 20x20cm dish x
Sally
Sunday 8th of February 2026
Lovely, easy recipe. I use just half the sugar and turns out fine 👍
Katy
Monday 9th of February 2026
So glad you like it! x
Shaun Carter
Saturday 15th of March 2025
Not a busy mum, just a single busy man. Used to make these every Sunday as a kid, great recipe, brought back some happy memories. Thank you.
Katy
Monday 17th of March 2025
So glad you enjoyed them! x
Sandy
Wednesday 23rd of October 2024
Thanks a lot for a quick recipe Kathy. I shall try and let you know the outcome.
Mo
Sunday 28th of January 2024
I have made the flap jack several times and it is absolutely delicious. It’s easy and quick, with no messy pans to wash afterwards. What’s not to like about it. .?