Pure Vanilla Custard Cream Slice

Pure Vanilla Custard Cream Slice-2

Golden-edged and quietly indulgent, these Vanilla Custard Cream Slices are a study in contrast—tender, buttery pastry giving way to a silken layer of softly set custard. Each bite is light yet luxurious, with a gentle sweetness that lingers rather than overwhelms, and a texture that dissolves almost as soon as it meets the tongue.

Finished with a delicate snowfall of icing sugar and, if you wish, a touch of fresh mint, they carry an effortless elegance—equally at home on a polished table or served simply with afternoon tea. There’s something faintly nostalgic about them, yet refined enough to feel entirely new.

Deceptively simple to prepare, they offer that rare balance: a dessert that looks composed and graceful, yet comes together with ease—perfect for those moments when you want something quietly impressive, and deeply satisfying.

Why You’ll Love This Recipe

  • Effortlessly composed – A gentle, unfussy method that feels as relaxed as it is rewarding, whether you’re a confident baker or just beginning.

  • Quietly indulgent flavour – Buttery pastry and softly perfumed vanilla custard come together in a way that feels both classic and deeply comforting.

  • A study in texture – A delicate crisp base beneath a cloud-like, silken custard—light, smooth, and beautifully balanced.

  • Universally adored – The sort of dessert that disappears quickly, drawing both nostalgia and second helpings in equal measure.

  • Gracefully make-ahead – Chills beautifully and holds its shape, making it ideal for preparing in advance with ease.

  • Naturally elegant – A light dusting of icing sugar and a simple flourish of mint is all it needs to feel polished and complete.

Prepare

20 mins

Cook

20 mins

Serving

12 - 16 slices

Ingredients

Makes approximately 12–16 elegant squares

For the Buttered Crust

  • 240g plain flour

  • 100g caster sugar

  • 225g unsalted butter, cold and neatly cubed

The foundation: Cold butter is essential here, melting slowly in the oven to create a tender, lightly flaky base that supports the custard without heaviness. A touch of sugar softens the richness, lending a gentle sweetness rather than overt indulgence.

For the Vanilla Custard

  • 1 litre whole milk

  • 200g caster sugar

  • 60g cornflour

  • 6 large egg yolks

  • 2 teaspoons vanilla extract

  • A pinch of fine sea salt

  • 480ml double cream, softly whipped

The heart: Whole milk forms a smooth, comforting base, while cornflour gives the custard its delicate structure—set, yet softly yielding. The egg yolks enrich without weighing it down, and the whipped cream, folded through at the end, brings a lightness that feels almost воздушный—silk meeting air.

To Finish

  • Icing sugar, for a light dusting

  • Fresh mint leaves, if you like, for a quiet flourish

A final touch: Simple, restrained, and considered—just enough to elevate without distracting from the custard’s soft, luminous texture.

Method

  1. Prepare the oven
    Preheat to 175°C. Lightly grease and line a 23 × 33cm baking tin with parchment, allowing a soft overhang for lifting later.

  2. Bring the crust together
    In a large bowl, combine the flour and sugar. Work in the cold butter—either with your fingertips or a pastry cutter—until the mixture resembles pale, coarse crumbs. Press firmly into the base of the tin, smoothing into an even layer.

  3. Bake until lightly golden
    Place in the oven for 15–20 minutes, until just set with a soft golden hue. Set aside and allow to cool completely in the tin.

  4. Warm the milk
    In a wide saucepan, gently heat the milk over a medium flame until it reaches a quiet simmer—hot, but not boiling.

  5. Whisk the custard base
    In a separate bowl, whisk together the sugar, cornflour, and egg yolks until smooth, thick, and pale.

  6. Temper with care
    Slowly pour a ladle of the warm milk into the egg mixture, whisking constantly. This gentle introduction prevents the eggs from catching.

  7. Cook to a silky finish
    Return the mixture to the saucepan with the remaining milk. Cook over medium heat, stirring steadily, until the custard thickens and begins to softly bubble. Allow it to cook for a further minute or two, until glossy and smooth.

  8. Finish the flavour
    Remove from the heat and stir through the vanilla and a pinch of salt. Transfer to a bowl and press a sheet of parchment or cling film directly onto the surface. Leave to cool completely.

  9. Lighten the custard
    Once cooled, fold through the softly whipped cream with a gentle hand, keeping the mixture airy and light. Spread evenly over the cooled crust.

  10. Chill to set
    Refrigerate for at least 4 hours, or until the custard is delicately set.

  11. Slice and serve
    Lift from the tin using the parchment. Cut into neat squares, then finish with a fine dusting of icing sugar and, if you wish, a few fresh mint leaves for a quiet flourish.

Helpful Tips

Variations & Substitutions

  • Seasonal finishes – Dress to suit the moment: a scatter of fresh berries in summer, a whisper of citrus zest for brightness, or fine chocolate shavings for something a little more indulgent.

  • Gluten-free option – Substitute the crust with a good-quality gluten-free plain flour blend, keeping the texture tender yet structured.

  • Dairy-free option – Replace the milk with coconut milk and use a non-dairy cream alternative; the custard will be slightly softer, but still beautifully smooth.

  • Pantry swaps – Butter may be exchanged for a plant-based alternative, and a portion of the sugar can be replaced with maple syrup for a gentler sweetness.

  • A warmer note – Introduce a subtle spice by folding in a pinch of cinnamon or freshly grated nutmeg to the custard.

  • Vegetarian by nature – As written, the recipe is naturally vegetarian—no adjustments required.

https://hartwellkitchen.com/wp-content/uploads/2026/03/Hartwell-Kitchen-Print-Recipe-scaled.jpg

Print & Share

Pure Vanilla Custard Cream Slice

A tender, buttery base meets a layer of silken vanilla custard, softly set and delicately sweet. Finished with a light dusting of icing sugar, these squares are quietly elegant—an indulgent yet refined dessert suited to any occasion.

Prep Time 20 minutes
Cook Time 20 minutes
Chill Time 4 hours
Servings: 16 slices
Course: Dessert
Cuisine: British
Calories: 420

Ingredients

  

For the Buttered Crust
  • 240 g plain flour
  • 100 g caster sugar
  • 225 g unsalted butter cold and neatly cubed
  • The foundation: Cold butter is essential here, melting slowly in the oven to create a tender, lightly flaky base that supports the custard without heaviness. A touch of sugar softens the richness, lending a gentle sweetness rather than overt indulgence.
For the Vanilla Custard
  • 1 litre whole milk
  • 200 g caster sugar
  • 60 g cornflour
  • 6 large egg yolks
  • 2 tsp vanilla extract
  • A pinch of fine sea salt
  • 480 ml double cream softly whipped
  • The heart: Whole milk forms a smooth, comforting base, while cornflour gives the custard its delicate structure—set, yet softly yielding. The egg yolks enrich without weighing it down, and the whipped cream, folded through at the end, brings a lightness that feels almost воздушный—silk meeting air.
To Finish
  • Icing sugar for a light dusting
  • Fresh mint leaves if you like, for a quiet flourish
  • A final touch: Simple, restrained, and considered—just enough to elevate without distracting from the custard’s soft, luminous texture.

Method

 

  1. Preheat the oven to 175°C and line a 23 × 33cm tin with parchment. Begin with the crust—bring together the flour and sugar, then work in the cold butter until the mixture resembles soft, coarse crumbs. Press into the tin and bake for 15–20 minutes, until lightly golden. Allow to cool completely.
  2. For the custard, gently heat the milk until just simmering. In a separate bowl, whisk the sugar, cornflour, and egg yolks until smooth, then slowly temper with the warm milk before returning everything to the pan. Cook over a steady heat, stirring continuously, until thickened and glossy. Remove from the heat, stir through the vanilla and salt, then cover the surface and leave to cool.
  3. Once the custard has fully cooled, fold through the softly whipped cream to create a light, airy finish. Spread evenly over the prepared crust and refrigerate for at least 4 hours, until delicately set.
  4. To serve, lift from the tin, slice into neat squares, and finish with a light dusting of icing sugar and a few fresh mint leaves, if you like.

Notes

  • Gently fold for lightness – When incorporating the whipped cream, use a soft hand to preserve that airy, cloud-like texture.

  • Best made ahead – An overnight chill allows the custard to set beautifully, giving the cleanest slices and most refined finish.

  • Finish, your way – If mint isn’t to your taste, a dusting of cocoa or a scattering of fresh berries makes an equally elegant alternative.

  • Temper with care – Always introduce the warm milk gradually to the eggs, whisking continuously, to keep the custard smooth and free from curdling.


Discover more from Hartwell Kitchen with Flora Ashbury

Subscribe to get the latest posts sent to your email.

Discover more from Hartwell Kitchen with Flora Ashbury

Subscribe now to keep reading and get access to the full archive.

Continue reading