Jam Flapjacks

These super easy Jam Flapjacks are one of my favourite quick and easy bakes. They are sweet and gooey, moist and a little bit crunchy, and the strawberry jam gives them a gorgeously fruity flavour. Perfect!

*This post may contain affiliate links to products I find useful when making this recipe. As an Amazon Associate, I earn from qualifying purchases.*

I love oats. In pancakes, cookies, as porridge, mixed into smoothies. Whatever. 

Oats are filling and tasty and they go with everything! I run a lot, so the energy boost that you get from them is great. 

Flapjacks are honestly one of my favourite things to make.

They are so simple, you only need a few ingredients to get a gorgeous sticky treat, and even though they are full of sugar and pretty unhealthy, the oats mean that they are at least more filling than other sweet treats with the same sugar and fat content. 

Jam Flapjacks are a big favourite in our house. Robyn especially loves jam and would have it on everything. This Jam Flapjack recipe is easy and always tastes great.

close up of flapjack on chopping board. Jar of jam to the side.

How to Make Easy Flapjacks

Easy Jam Flapjacks are, well, easy to make! 

You simply melt the butter, sugar, and syrup together, taking care to make sure there are no lumps of sugar left, and stirring constantly as the mixture heats up, to ensure it doesn’t catch to the bottom of your pan. 

I do this over a gentle heat in a small pan on the hob.

As soon as it’s all melted together and smooth (well before it boils) pour it over your oats in a large mixing bowl and stir until all of the oats are wet.

It’s a fairly moist mixture, so there shouldn’t be any dry oats left. 

Then I spoon just under half of the oats into a lined tin and use the back of my fingers to press down, compacting the mixture, and pressing it out into the sides so there’s an even, flat layer on the bottom of the tin. 

Where Do You Put the Jam in Flapjacks?

3/4 shot of jam flapjack on chopping board, jar of jam with spoon in background.

There’s nothing better than a Flapjack with Jam Layer, and I like lots of jam!

I spoon 6 good tbsps. onto that flat layer of oats, before spreading to the edges in a nice thick layer. 

You might find it easier to use room temperature jam, but because the oats are still fairly warm, spreading jam straight from the fridge isn’t too difficult. 

Finally, I spoon on the rest of the oats and again press to the edges with my fingers. Don’t worry if a little jam seeps through as you do this, some is bound to bubble up anyway. 

Then, bake in a preheated oven for around 30 minutes, until the top is golden brown and a little bit crunchy. 

If you prefer a very Soft Flapjack Recipe bake for a little less. If you like them very crunchy, bake for longer. 

I tend to go for chewy, with just a little crunch on the top when I make Jam Filled Flapjacks.

What Tin Do You Need to Bake Flapjacks?

For my Homemade Flapjacks, I use the same brownie pan (affiliate link) that I use for my brownies and traybakes. It’s a nice size (26cm x 36cm x 4cm), and deep enough for most sheet bakes like this. 

baked flapjack in baking tin with paper.

I line the pan with reusable baking paper (affiliate link) because Jammy Flapjacks are incredibly sticky and getting them out of the tin otherwise would be really hard. 

You could use any deepish baking tin or cake tin, just adjust the time slightly (or the quantities) if your tin is significantly smaller or larger than mine. 

Why Are Flapjacks Unhealthy?

It’s all the sugar, syrup, and butter. Oh, and the jam. 

They aren’t great. But, as I say they are filling, and oats have plenty of benefits

Should Jam Flapjacks be Soft When They Come Out of the Oven?

Honestly, it depends on how crunchy you like your flapjacks

When I make Flapjacks with Strawberry Jam the top is golden brown and almost set, when they come out of the oven. But if you poke them (carefully, the jam gets very hot) they are still soft. They firm up as they cool. 

up cut flapjack on baking paper. Baking tin, knife and jam surrounding.

I leave my Flapjacks with Jam in the tin to cool completely so they firm up and are easier to get out.

Why Do My Jam Flapjacks Fall Apart?

Jam Flapjacks with Porridge Oats are always going to be a bit crumbly; they are full of oats. 

But you should be able to slice them without them totally falling apart. If your flapjacks are falling apart, it might be because:

flapjack with jam on small white plate with blue print. Chopping board and blue cloth leaving shot.
  • You need to use more syrup, sugar or butter, or fewer oats to help everything stick together. 
  • You need to cool them fully before trying to move and slice them.
  • You might not have pressed them down firmly enough. Really compacting the oats helps them to stick together, removes air from between the oats and makes it easier to get a more solid bar. 
  • You need to bake for a little longer. 

How Do You Decorate Strawberry Jam Flapjacks?

I don’t decorate my Strawberry Flapjacks at all. They are an easy treat and I like to keep them that way. 

You could however melt a little white chocolate and drizzle onto the top for Strawberry and White Chocolate Flapjacks.

top view of baked flapjack on chopping board with jar of jam. Sharp knife to the side.

Are Jam Flapjacks Suitable for Vegans?

So, I thought these were Vegan Jam Flapjacks as long as you use margarine and not butter and skip the white chocolate. 

But some research tells me that sugar might also be an issue. However, you can get vegan-friendly sugar, so this recipe should be relatively easy to adapt. 

Other Oat Recipes

3/4 shot of jam flapjack on chopping board, jar of jam with spoon in background.

Jam Flapjacks

Author NameDonna
These easy Jam Flapjacks are a great quick and easy bake. They are sweet and gooey, chewy and a little bit crunchy, and the strawberry jam gives them a lovely fruity flavour.
No ratings yet
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Snacks, Sweets
Cuisine British
Servings 8 large slices or 16 small squares
Calories 341 kcal

Ingredients
 
 

  • 300 g Porridge Oats
  • 115 g Soft Light Brown Sugar
  • 150 g Golden Syrup
  • 180 g Butter or Margarine
  • 6 tablespoons Strawberry Jam

Instructions
 

  • Preheat the oven to 180 degrees and line a deep baking tray.
  • Pour the oats into a large mixing bowl.
  • In a small saucepan over a gentle heat, melt together the butter, sugar and syrup, stirring constantly until the mix is smooth and even – do not let it come to the boil, or it will start to thicken into caramel.
  • Pour this mixture over the oats.
  • Mix carefully until the oats are all wet.
  • Spoon just under half of the oats into the baking tin.
  • Use a spoon or your fingers to press down, and out to the edges until you’ve got a flat, even layer in the bottom of the tin.
  • Spoon on the jam and use the back of a metal spoon to spread evenly.
  • Spoon on the remaining oats, and use your fingers or a spoon to spread to the edges and press down to a flat, even layer.
  • Bake in the oven for around 30 minutes, until the top is golden brown.
  • Leave in the tin to cool completely, before tipping out and slicing.

Nutrition

Nutrition Facts
Jam Flapjacks
Serving Size
 
1 bar
Amount per Serving
Calories
341
% Daily Value*
Fat
 
19
g
29
%
Saturated Fat
 
12
g
75
%
Trans Fat
 
1
g
Polyunsaturated Fat
 
6
g
Cholesterol
 
51
mg
17
%
Sodium
 
182
mg
8
%
Carbohydrates
 
42
g
14
%
Fiber
 
1
g
4
%
Sugar
 
29
g
32
%
Protein
 
2
g
4
%
* Percent Daily Values are based on a 2000 calorie diet.

Any nutritional information is given as a general guide only and may not be accurate. The information is provided using an online calculator and is specific to my ingredients. Please make your own calculations if you want precise information.

Keyword flapjacks with jam layer, flapjacks with strawberry jam, jam flapjack recipe
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Donna Dundas
Donna Dundas is an experienced family food blogger who has been creating easy and wholesome recipes for over 7 years. Her blog is a must-read for anyone looking for filling and delicious recipe ideas, that reduce waste and minimise stress.

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