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Joyful easy sprinkle traybake: 10 steps

By sophie on April 22, 2026

A close-up shot of a freshly baked easy sprinkle traybake, covered in white icing and colourful sprinkles.

Oh, I just adore a good bake that looks like a million pounds but is actually ridiculously simple, don’t you? There’s something so heartwarming about a bright, colourful cake, especially when it’s an easy sprinkle traybake that practically makes itself. Honestly, this recipe is my absolute go-to when I need a last-minute treat for a kids’ party or just a bit of cheer for a dreary afternoon. I remember one frantic Saturday morning when my daughter’s friend announced she was popping over in an hour – this traybake saved the day! It’s so satisfying and looks absolutely gorgeous with minimal fuss.

Why You’ll Love This Easy Sprinkle Traybake

  • It’s an absolute breeze to whip up, perfect when you’re short on time.
  • The sponge is wonderfully soft and tastes just like a classic, comforting cake.
  • It’s a total crowd-pleaser – kids and adults alike adore that vibrant sprinkle topping!
  • Visually, it’s a stunner that brings instant cheer to any table.
  • You probably already have most of the ingredients in your cupboards!

Ingredients for Your Easy Sprinkle Traybake

Right then, let’s get cracking with what you’ll need for this delightful easy sprinkle traybake. Don’t worry, it’s all pretty standard stuff you can probably find in your kitchen right now!

  • 2 cups all-purpose flour (don’t pack it down too much in the cup!)
  • 1 1/2 teaspoons baking powder
  • 1/4 teaspoon salt
  • 3/4 cup unsalted butter, properly softened (this is key for a light cake, leave it out for a good hour or so)
  • 3/4 cup granulated sugar
  • 3 large eggs, at room temperature preferably
  • 1/2 cup whole milk
  • 1 teaspoon vanilla extract (the real stuff, if you have it!)
  • For the topping:
  • 1 1/2 cups powdered sugar (also known as icing sugar or confectioners’ sugar)
  • 2 tablespoons milk
  • 1/2 teaspoon vanilla extract
  • 1/4 cup rainbow sprinkles (get the good ones that don’t bleed colour too much!)

Step-by-Step Instructions for the Perfect Easy Sprinkle Traybake

I always suggest getting your oven preheated and your tin sorted first – it just makes everything flow so much better. Trust me, being organised makes this easy sprinkle traybake even easier!

Step 1: Get the oven hot and the tin ready. First things first, crank your oven up to 350°F (that’s 175°C for most of you). Then, grab a 9×13 inch baking pan and line it with parchment paper. I find this makes lifting the cake out so much simpler, no sticking worries!

Step 2: Mix the dry bits. In a medium bowl, just give your flour, baking powder, and salt a quick whisk together. This just makes sure everything’s distributed nicely so you don’t get a surprise salty bit!

Step 3: Cream the butter and sugar. Now, in a separate, larger bowl, get your softened butter and granulated sugar in there. Beat them together until they look light and fluffy. This usually takes about 2 to 3 minutes with an electric mixer, and it’s super important for a light cake. Don’t skimp on this bit!

Step 4: Add the eggs and vanilla. Pop your eggs in one at a time, giving it a good mix after each one. Then stir in your teaspoon of vanilla flavoring. It smells lovely already, doesn’t it?

Step 5: Bring it all together. Now, gradually add your dry ingredients (from Step 2) to the butter mixture, alternating with the milk. Start and end with the dry ingredients. Mix until it’s *just* combined – overmixing can make the cake tough, and nobody wants that!

Step 6: Get it in the pan! Pour all that lovely batter into your prepared tin and smooth the top out evenly with a spatula. You want it nice and level so it bakes evenly.

Step 7: Bake it up! Pop it in the preheated oven for about 25 to 30 minutes. You’ll know it’s ready when it’s a light golden colour and a skewer or toothpick you poke into the middle comes out clean. If it comes out with wet batter, give it another few minutes.

Step 8: Cool, cool, cool! Take the cake out of the oven and let it cool completely *in the pan*. Seriously, this is crucial. Trying to ice a warm cake is a recipe for disaster – the icing just melts off! It’s worth the wait, I promise.

Step 9: Make the topping. Once the cake is totally cool, whisk together the powdered sugar, 2 tablespoons of milk, and the other 1/2 teaspoon of vanilla until you have a smooth, spreadable icing. If it’s a bit too thick, add a tiny splash more milk; if it’s too thin, a bit more powdered sugar. It should be like a thick paste, perfect for spreading.

A close-up of a freshly baked easy sprinkle traybake, topped with white icing and a generous amount of colourful sprinkles.

Step 10: Ice and sprinkle! Spread that lovely icing all over the cooled cake, getting it as even as possible. Then, immediately scatter your rainbow sprinkles generously all over the top. You want to do this while the icing is still soft so they all stick! You can find some really fun sprinkle mixes online these days too, or even check out classic Victoria sponge recipes for inspiration on simple bases.

Serving Suggestions for Your Easy Sprinkle Traybake

This easy sprinkle traybake is honestly brilliant all on its own, but if you fancy jazzing it up a bit, here are a few ideas:

  • A simple bowl of fresh berries – the tartness cuts through the sweetness beautifully.
  • A good dollop of clotted cream or whipped cream. It’s just so decadent!
  • A scoop of good quality vanilla ice cream. Classic for a reason!
  • If you’re feeling a bit more adventurous, you could try serving it with something like our banana pudding – it’s a bit extra, but oh-so-worth-it!

A close-up of an easy sprinkle traybake, showing a slice cut out, topped with white frosting and colourful sprinkles.

Storing and Reheating Your Easy Sprinkle Traybake

Right, storing this lovely easy sprinkle traybake is pretty straightforward! Once it’s completely cooled, just pop it into an airtight container. It’ll stay beautifully soft and delicious at room temperature for about 3-4 days. Honestly, it’s so good, it rarely lasts that long in my house! I find it’s best served at room temperature anyway, so no need to reheat really. If you’re making it ahead for a party, just bake and ice it the day before and keep it covered.

Frequently Asked Questions about this Easy Sprinkle Traybake

Can I use different sprinkles in this easy sprinkle traybake?

Oh, absolutely! While rainbow sprinkles are classic, feel free to get creative. Chocolate sprinkles are lovely, or you could use themed ones for holidays like Halloween or Christmas. Just make sure they’re baking-friendly and won’t melt away too much in the oven’s residual heat. The key is to add them right after icing, while it’s still gooey!

How can I make this easy sprinkle traybake gluten-free?

To make this gluten-free, you’ll want to swap out the all-purpose flour for a good quality gluten-free blend that contains xanthan gum. Sometimes, gluten-free cakes can be a little drier, so you might need to add an extra splash of milk to the batter or just make sure you don’t overbake it. It should still turn out lovely and colourful!

My icing is too thin, what should I do?

Don’t panic! If your icing for the easy sprinkle traybake is too thin, just gradually whisk in a little more powdered sugar, a tablespoon at a time, until it reaches a nice thick, spreadable consistency. If it’s too thick, add a tiny splash (like, literally half a teaspoon) of milk at a time until it’s right. You want it thick enough to coat the cake but not so stiff it’s hard to spread.

Before You Go

Right then, give this simple, cheerful easy sprinkle traybake a go this week! I promise it’s a little slice of happiness that’s just as fun to make as it is to eat. Have you made it? I’d love to hear what you thought in the comments below, or even better, share a photo over on Pinterest – I love seeing your creations!

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Close-up of a freshly baked easy sprinkle traybake covered in white icing and colourful sprinkles.

Easy Sprinkle Traybake


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  • Author: Jordan Bell
  • Total Time: 45 min
  • Yield: 12 servings
  • Diet: Vegetarian

Description

A simple traybake with a soft sponge and colourful sprinkle topping, perfect for parties.


Ingredients

  • 2 cups all purpose flour
  • 1 1/2 teaspoons baking powder
  • 1/4 teaspoon salt
  • 3/4 cup unsalted butter softened
  • 3/4 cup granulated sugar
  • 3 large eggs
  • 1/2 cup whole milk
  • 1 teaspoon vanilla flavoring
  • 1 1/2 cups powdered sugar
  • 2 tablespoons milk
  • 1/2 teaspoon vanilla flavoring
  • 1/4 cup rainbow sprinkles


Instructions

  1. Preheat your oven to 350°F (175°C) and line a 9×13 inch baking pan with parchment paper.
  2. In a bowl, whisk together the flour, baking powder, and salt.
  3. In another bowl, beat the butter and sugar until light and fluffy, about 2 to 3 minutes.
  4. Add the eggs one at a time, mixing well after each addition, then mix in the vanilla flavoring.
  5. Gradually add the dry ingredients, alternating with the milk, mixing until just combined.
  6. Pour the batter into the prepared pan and smooth the top evenly.
  7. Bake for 25 to 30 minutes until the cake is lightly golden and a toothpick inserted comes out clean.
  8. Allow the cake to cool completely in the pan.
  9. For the topping, whisk the powdered sugar, milk, and vanilla flavoring until smooth and spreadable.
  10. Spread the icing over the cooled cake and immediately scatter the rainbow sprinkles on top.

Notes

  • Add the sprinkles while the icing is still soft so they stick evenly across the surface.
  • Prep Time: 15 min
  • Cook Time: 30 min
  • Category: Dessert
  • Method: Baking
  • Cuisine: British

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