Dulce de Leche Custard Tart Recipe

A buttery shortcrust pastry cradles silky vanilla custard topped with decadent dulce de leche, creating an irresistible harmony of caramelized sweetness and velvety smoothness in every luxurious bite.
Difficulty:
Intermediate
Prep Time:
40 mins
Cook Time:
55 mins
Serves:
1 tart (8 slices)
Overhead shot of a perfectly golden-brown tart with a crisp, fluted edge showcasing the contrast between the pale yellow custard layer and the glossy amber dulce de leche swirled artfully on top. A cross-section view reveals distinct layers of buttery crust, creamy vanilla-flecked custard, and rich caramel topping. Captured in soft natural light on a rustic ceramic plate with fresh berries scattered alongside, a small jar of dulce de leche and a vintage serving knife strategically placed in frame. A light dusting of sea salt crystals catches the light, highlighting the velvety surface texture of the tart while a wisp of steam suggests it's freshly baked.

Ingredients

<ul class="ingredients-main-list"><li class="ingredients-single-item">For the pastry:</li><li class="ingredients-single-item">200g plain flour</li><li class="ingredients-single-item">100g cold unsalted butter, cubed</li><li class="ingredients-single-item">30g icing sugar</li><li class="ingredients-single-item">1 large egg yolk</li><li class="ingredients-single-item">2-3 tbsp ice-cold water</li><li class="ingredients-single-item">¼ tsp salt</li><li class="ingredients-single-item">For the custard filling:</li><li class="ingredients-single-item">500ml whole milk</li><li class="ingredients-single-item">1 vanilla pod, split and seeds scraped (or 2 tsp vanilla extract)</li><li class="ingredients-single-item">5 large egg yolks</li><li class="ingredients-single-item">100g caster sugar</li><li class="ingredients-single-item">30g cornflour</li><li class="ingredients-single-item">For the topping:</li><li class="ingredients-single-item">300g dulce de leche (or caramelized sweetened condensed milk)</li><li class="ingredients-single-item">Flaky sea salt, for garnish (optional)</li></ul>

Equipment

<ul class="equipment-main-list"><li class="equipment-single-item">23cm loose-bottomed tart tin</li><li class="equipment-single-item">Baking beans or uncooked rice for blind baking</li><li class="equipment-single-item">Parchment paper</li><li class="equipment-single-item">Rolling pin</li><li class="equipment-single-item">Fine-mesh sieve</li></ul>
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Directions

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Start by making the pastry. Place the flour, salt, and cold cubed butter in a food processor and pulse until the mixture resembles fine breadcrumbs (or rub the butter into the flour by hand). The cold butter creates pockets of steam during baking, resulting in flaky layers.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Add the icing sugar and pulse briefly to combine. With the motor running, add the egg yolk followed by just enough ice-cold water to bring the dough together into a ball. The dough should be firm but pliable, not sticky or crumbly.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Turn the dough onto a lightly floured surface, shape into a disc, wrap in cling film and refrigerate for at least 30 minutes. This resting time is crucial as it allows the gluten to relax (preventing shrinkage) and the butter to firm up.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>Preheat your oven to 180°C. Roll out the chilled pastry on a lightly floured surface to about 3-4mm thickness, making sure it's large enough to line your tart tin with some overhang. Carefully drape the pastry over your rolling pin to transfer it to the tin, pressing it gently into the corners without stretching.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Trim the excess pastry, leaving about 1cm overhang (this helps prevent shrinkage). Prick the base all over with a fork, then line with parchment paper and fill with baking beans or rice. Blind bake for 15 minutes until the edges are turning golden.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Remove the beans and parchment, then return the tart to the oven for another 10 minutes until the base is golden and crisp. The bottom should look dry and set, not doughy. Trim any remaining overhang with a sharp knife for a clean edge, then leave to cool while you make the custard.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>For the custard, place the milk and vanilla in a saucepan and heat until just below boiling point - you'll see small bubbles around the edge. Meanwhile, in a large heatproof bowl, whisk together the egg yolks, sugar and cornflour until pale and smooth.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Very slowly pour the hot milk into the egg mixture while whisking constantly to prevent the eggs from scrambling. This gentle tempering is crucial for a silky-smooth custard. Once combined, pour the mixture back into the saucepan.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Cook over medium heat, stirring continuously with a wooden spoon or heatproof spatula, until the custard thickens significantly - it should coat the back of your spoon and leave a clear path when you run your finger through it. This will take about 5-7 minutes; don't rush this step or your custard may be too loose.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Remove from heat and strain through a fine-mesh sieve into a clean bowl to ensure absolute smoothness. Cover the surface directly with cling film (to prevent a skin forming) and allow to cool slightly for about 10 minutes - the custard should still be warm but not hot when pouring into the pastry case.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Pour the warm custard into the cooled pastry case, smoothing the top with a spatula. Give the tin a gentle tap on the counter to release any air bubbles. Allow to cool completely at room temperature, then refrigerate for at least 2 hours, preferably 4, until the custard is firmly set.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>Once the custard is set, gently warm the dulce de leche in a small saucepan or microwave until it's just spreadable, but not hot. Carefully spread it over the custard layer in an even layer, or create decorative swirls using the back of a spoon.</li><li class="MethodStepper"><h4 class="step-title">Step 13</h4>If desired, sprinkle with a tiny amount of flaky sea salt to enhance the caramel flavor. Refrigerate for another 30 minutes to set the dulce de leche before serving. The contrast between the crisp pastry, creamy custard and rich dulce de leche creates a wonderful textural experience.</li></ol>

Nutrition Facts (per serving)

🍽️ Serving Size: 1 slice
🔥 Calories: 425 calories
🥑 Fat: 26 g
🧈 Saturated Fat: 15 g
🍞 Carbohydrates: 43 g
🍭 Sugar: 32 g
🍗 Protein: 6 g
🫀 Cholesterol: 220 mg
🧂 Sodium: 185 mg

Chef’s Notes

A few helpful details for making this recipe.

Why is my custard tart filling not setting properly?

Custard filling may not set properly if it wasn't cooked long enough to activate the cornflour, if you used too little cornflour, or if it wasn't chilled adequately. Ensure you cook the custard until it thickly coats the back of a spoon and refrigerate for at least 4 hours.

Can I make a caramel custard tart in advance?

Yes, this dessert is perfect for making ahead! The tart can be fully assembled and refrigerated up to 2 days before serving. For the freshest taste, consider adding the dulce de leche layer on the day of serving. The pastry will remain crisp for about 48 hours when properly stored.

What's the difference between dulce de leche and caramel for topping a tart?

Dulce de leche is made by slowly cooking sweetened condensed milk until caramelised, creating a smooth, consistent texture. Traditional caramel is made from caramelised sugar and cream. Dulce de leche has a more pronounced milky flavour and thicker consistency, making it ideal for tart toppings.

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