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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Julia Smith
Tuesday 8th of September 2026
How do you know if they are done?
Katy
Thursday 10th of September 2026
When the edges start to go a little golden. You don't want them to be cooked all over or to go solid as that will result in flapjacks like rock. So, a little golden around the edges but still soft. Leave them to cool and they will solidify to the perfect consistency. Good luck!
Bask
Wednesday 19th of August 2026
Lovely. These were finished before they cooled down
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