A Slice of Nostalgia – Soft Vanilla Sponge with Jam and Coconut

Some desserts are more than just sweet treats—they’re pure time machines. If you ever had school dinners in the UK, there’s a good chance you remember the glorious Jam and Coconut Cake—a soft vanilla sponge topped with a shiny layer of strawberry jam and that snowy dusting of desiccated coconut. Simple? Totally. Delicious? Absolutely. Unforgettable? Every single time.

Hi, friends! I’m so excited to share one of my all-time favourite traybakes with you today. This Classic Jam and Coconut Traybake is straight out of a childhood lunch tray, but it’s just as good as an afternoon pick-me-up with a cuppa. It’s fluffy, moist, and covered in jammy goodness.

What I love most about this recipe (besides the nostalgic vibes) is how easy it is to whip up with pantry staples. It comes together fast, bakes beautifully, and serves a crowd. Honestly, it’s one of those “why don’t I make this more often?” kind of bakes.

So let’s get into it. Here’s everything you’ll need for this timeless treat.

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📝 Ingredients

For the Sponge:

• 200g butter, softened

• 200g caster sugar

• 4 large eggs

• 200g self-raising flour

• 2 tbsp milk

• 1 tsp vanilla extract

For the Topping:

• 4 tbsp strawberry jam

• 50g desiccated coconut

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🔪 Step 1: Prep Your Tin and Preheat

Start by preheating your oven to 180°C (or 160°C fan). Grease and line a 20cm x 30cm rectangular baking tin with parchment paper. This makes removing the sponge a breeze later on—and keeps cleanup easy too!

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🧁 Step 2: Cream the Butter and Sugar

In a large mixing bowl, beat together the softened butter and caster sugar until it’s light, pale, and fluffy. This can take a good few minutes, so don’t rush it—this step helps create that soft, airy sponge texture we love.

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🥚 Step 3: Add the Eggs

Crack your eggs in one at a time, beating well after each addition. If the mixture starts to curdle, don’t panic—just add a tablespoon or two of the flour to help bring it back together.

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🌾 Step 4: Fold in the Dry Ingredients

Sift in the self-raising flour, then gently fold it into the mixture using a spatula or wooden spoon. Be careful not to overmix—you just want everything nicely combined. Add the vanilla extract and milk, then give it a final gentle stir until smooth.

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🍰 Step 5: Bake That Beautiful Sponge

Pour your cake batter into the prepared tin and spread it out evenly. Pop it into the oven and bake for 25 to 30 minutes, or until golden and springy to the touch. You can check with a skewer—it should come out clean when the cake is done.

Let it cool completely in the tin before you go adding the jam topping. I know, the wait is hard—but it’s worth it.

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In Part 2, we’ll top it with jam, sprinkle on that lovely coconut, and chat through a few fun ways you can twist this recipe to make it your own.

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The Sweet Finish – Jam, Coconut, and Traybake Magic

Now that your vanilla sponge is baked and cooled, it’s time for the best part—the jam and coconut topping! This combo is what takes the sponge from good to legendary.

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🍓 Step 6: Spread on the Jam

Once the sponge is cool to the touch, grab your 4 tablespoons of strawberry jam and spread it evenly across the top. You can warm the jam slightly if it’s too thick—it helps make spreading easier and gives that smooth, glossy finish we’re after.

If you’re not a strawberry fan, you can absolutely switch this up. Raspberry, apricot, or even blackcurrant jam would all taste amazing.

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🥥 Step 7: Sprinkle the Coconut

Next, take your 50g of desiccated coconut and scatter it generously over the jam. You want a nice even layer—it should look snowy and sweet and completely irresistible.

This step adds that iconic look and gives the cake a lovely texture. The light crunch of coconut paired with the softness of sponge and sticky jam is just… perfection.

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🔪 Step 8: Slice and Serve

Once everything’s topped, use a sharp knife to cut the traybake into 12 even squares. If you’re bringing this to a gathering or packing lunchbox treats, smaller bites work great too.

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🍴 Serving Tips & Twists

• With Custard: This might sound extra, but warming a square and pouring over hot custard is an elite move.

• Jam Variations: Try orange marmalade and coconut for a citrus twist or mix in a spoonful of lemon curd under the jam for something different.

• No Coconut? No problem! Try chopped nuts or even a dusting of icing sugar if you’re not a coconut fan.

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This bake is perfect for birthday parties, bake sales, or just cheering up a rainy afternoon. Honestly, it’s like a hug on a plate. Now, let’s wrap things up with some quick Q&As and a full recipe breakdown.

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FAQs + Final Thoughts

❓ Frequently Asked Questions

1. Can I use margarine instead of butter?
Yes, you can substitute margarine in equal amounts. Just be sure to use one suitable for baking (not low-fat spreads).

2. Do I have to use strawberry jam?
Nope! Raspberry, cherry, or even lemon curd work beautifully. Go with your favourite or use what you have.

3. How long does this keep?
Store in an airtight container at room temperature for up to 4 days. It stays soft and delicious!

4. Can I freeze it?
Yes, freeze individual squares wrapped in cling film for up to 1 month. Defrost at room temperature.

5. What if I don’t have self-raising flour?
No worries—just use plain flour and add 2 tsp of baking powder to achieve the same lift.

6. Can I make this gluten-free?
Absolutely. Use a 1:1 gluten-free flour blend with baking powder included, or add it separately if needed.

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❤️ Final Thoughts: Bake It and Share the Joy

There’s just something so comforting about this Jam and Coconut Traybake. It’s simple, it’s sweet, and it brings back memories with every bite. Whether you grew up eating this in a school cafeteria or are trying it for the first time, it’s one of those bakes that never goes out of style.

If you try it, I’d love to know how it turned out! Leave a comment or tag me on social—especially if you added your own twist. Happy baking, friends!

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