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Mary Berry Custard Slice Recipe

Mary Berry Custard Slice Recipe requires only a few basic ingredients and can be prepared in half an hour; this recipe is very easy to follow. So you may start indulging in this delicious delight straight away.
Mary Berry Custard Slice Recipe


What Is Mary Berry Custard Slice Recipe?

A delicious dessert called Mary Berry Custard Slice is prepared with buttery puff pastry and velvety custard inside. With every bite, its perfectly balanced flaky and creamy texture delivers an enjoyable experience. 

What Does Mary Berry Custard Slice Recipe Taste Like?

The well-known Mary Berry custard slice recipe is sweet, creamy, and incredibly tasty. An all-time favorite recipe from Mary Berry!

Why You’ll Love Mary Berry Custard Slice Recipe?

  • Every bite of the rich, creamy, and somewhat vanilla-infused sweet custard filling tastes like bliss.
  • The delicate layers of puff pastry, with their pleasing crunch from the butter, complement the creamy custard.
  • A burst of fruity freshness from the fresh berries counteracts the sweetness and adds a pop of color to the slice.
Why You’ll Love Mary Berry Custard Slice Recipe

What is The Best Mary Berry Custard Slice Recipe?

The well-known British baker and TV personality who popularized this delicious dessert is the source of the Mary Berry custard slice recipe. It’s now more than just a challenge to make gluten-free puff pastry at home—it’s an impossible task.

Ingredients Required Mary Berry Custard Slice Recipe

The key ingredients of the recipe for custard slices Mary berry include plain flour, butter, water, milk, one vanilla pod, caster sugar, yolks from free-range eggs, corn flour, powdered sugar, and dark melted chocolate. 

How To Make Custard Slice Recipe Mary Berry?

  • Gradually heat the milk, cream, and vanilla pod until they simmer.
  • Take out the vanilla pod (to make vanilla sugar, wash, dry, and keep in a jar with caster sugar).
  • In a bowl, whisk together the yolks, sugar, and corn flour until thoroughly combined.
  • Using a balloon whisk, continuously whisk the eggs and sugar after adding the heated milk and cream.
  • Return to the pan, and whisk gently with a wooden spatula over low heat until thickened (add vanilla extract, if using).
  • Transfer the custard into a pitcher and serve right away.
  • To maintain the heat, place the jug in a pan of hot water and place cling film over the top to stop skin from forming.
Custard Slice Recipe Mary Berry Nutrition Facts

How To Serve Custard Slice Recipe Mary Berry?

Lift the slice out of the tin and cut through to the point where the pastry top is already sliced to serve. After serving, sprinkle a bit of extra icing sugar over the pieces. Ideal for consumption within a day, while the pastry is still flaky and delicious.

What To Serve With Custard Slice Recipe Mary Berry?

Serve the Mary Berry Custard Slice with some vanilla ice cream or freshly whipped cream to counterbalance its richness. Try pairing it with something hot, like coffee or tea, to balance off the sweetness. It makes the perfect after-meal treat!

Recipe For Custard Slices Mary Berry Variations

  • Chocolate: For the custard part, you might use this recipe for my chocolate meringue pie, using the puff pastry method described here. Instead, cover it with chocolate icing (icing sugar, cocoa, and either milk or water) or dust it with cocoa.
  • No icing: if you’d like, just sprinkle some icing sugar on top right before serving.
  • Lattice biscuits: You can use lattice biscuits in place of the puff pastry. Making this will be even simpler, but eating it won’t be as simple.
How To Make Custard Slice Recipe Mary Berry

Pro Tips To Make Perfect Recipe For Custard Slices Mary Berry

  • To acquire the true flavor, use real vanilla extract and avoid imitations.
  • Allow to cool completely before sprinkling the custard over the pastry. This will prevent moisture from seeping into the bottom.
  • Select ripe, fresh berries to enhance the slice’s inherent sweetness and provide vibrant hues.
  • To ensure consistent baking and the perfect flaky texture, roll out your puff pastry to the same thickness.
  • Take your time! Let the slice cool for a substantial amount of time so that the creamy texture sets and deepens.

How To Store Leftover Recipe For Custard Slices Mary Berry?

  • Within The Refrigerator. Store the classic Mary Berry Custard Slice in the refrigerator in an airtight container for up to two or three days.
  • Within the freezer. To freeze, simply cover each slice with plastic wrap and place it in the freezer for a minimum of two months.
Mary Berry Custard Slice Recipe

Mary Berry Custard Slice Recipe

Custard Slice Recipe Mary Berry Ingredients

Custard Slice Recipe Mary Berry Ingredients

For Pastry With Rough Puffs

For The Crème Pâtissière

For The Icing

Custard Slice Recipe Mary Berry Instructions

Step 1: Flour and salt should be combined in a big mixing bowl. Mix the flour and one-third of the butter until the mixture resembles breadcrumbs. Next, roughly mix in the remaining butter, leaving large lumps.

Step 2: Water can be added gradually until the dough comes together. Turn out the dough onto a floured board and roll it into a thin rectangle about 2.5 cm/1 in thick. 

Step 3: Wrap the pastry in plastic wrap and refrigerate for ten minutes. Three more times, roll and rotate, allowing the food to cool in between.

Step 4: While the pastry is resting, prepare the crème patissière. In a bowl, whisk together the egg yolks, sugar, and cornstarch. Combine the two mixtures, cook until thickened, and then stir in the butter.

Step 5: Cover the chilled crème patissière with plastic wrap and store it in the fridge.

Step 6: It is necessary to preheat the oven to 220C/425F. Arrange two pastry trays in a line.

Step 7: Divide the pastry in half, then roll out each half to a thickness of 20 cm by 8 in by 5 mm. Put in the fridge for ten to fifteen minutes.

Step 8: Bake the pastry sheets until they become firm and browned. Calm them down. Line a baking sheet that is 23 cm/9 in square with aluminum foil.

Step 9: Evenly spread the crème patissière, then cover with the second pastry layer. While making the frosting, place it in the refrigerator. Sift the confectioners’ sugar and stir in the lukewarm water to make the frosting.

Step 10: Pipe parallel chocolate lines onto the frosting using a piping bag. Chill the slice to make it solid. Slice the meat into eight pieces, then put the pieces on a serving dish.

How To Store Leftover Recipe For Custard Slices Mary Berry

Custard Slice Recipe Mary Berry Nutrition Facts


  • Nutrition values are an estimate only.
Your recipe for custard slices Mary berry will turn out flaky and perfectly cooked if the dough is chilled, cold butter is used, and enough time is allowed to rest in between folds.
Yes, you can make the recipe for custard slices Mary berry ahead of time and refrigerate it to preserve its freshness for a party or event.
Whisk the ingredients well, drain the mixture before heating, and stir constantly over low heat to avoid lumps in the custard.
You may drizzle some caramel sauce over the custard layer before constructing the slice to give it some extra richness and sweetness.
Using a wooden spoon to continuously stir the custard is one of the best tips. To produce custard, some individuals use whisks, which incorporate air and create tiny air bubbles. The custard must not include any more air, as this would affect the ingredient’s volume and density, making the slice less able to maintain its shape. 


This classic Mary Beery custard slice recipe is incredibly tasty, smooth, and easy to make. This simple slice dish, which has layers of flaky puff pastry, an incredibly creamy vanilla custard, and vanilla icing on top, is ideal for afternoon tea!


Welcome! I’m Sumi, and I have a love for FOOD. Here, we’re all almost the pleasure of homemade delicious recipes.
Have you tried out one of my recipes? Share your culinary creations with us by tagging @eatfreshs on Instagram – I’d love to see your delicious dishes and connect with enthusiasts like you!

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