Portuguese · Dessert
Portuguese custard tarts
About this recipe
Portuguese cooking is fundamentally a seafood and pork tradition, with bacalhau (salt cod) appearing in hundreds of forms, alongside Mediterranean staples — olive oil, garlic, tomato, sweet paprika — applied differently than in Spain.
As a dessert, Portuguese custard tarts is the part of cooking where ratio precision matters most: a five-percent miss on flour or sugar changes the texture in a way no savoury dish would notice. Weighing in grams beats measuring in cups every time.
Set your servings in the scaler above and every line of the recipe rewrites itself with smart fractions and unit promotion. Open Cook Mode to step through it hands-free with timers running.
Recipe data is sourced from TheMealDB's open community database; ScaleRecipe handles the curation, the scaling math, the editorial commentary, and the conversion utilities woven into each page.
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Method
- STEP 1
- Roll the pastry
- Mix the flour and icing sugar, and use this to dust the work surface. Roll the pastry out to make a 45 x 30cm rectangle. Roll up lengthways to create a long sausage shape.
- STEP 2
- Cutting pastry into rounds
- Cut the pastry into 24 wheels, about 1-2cm thick.
- STEP 3
- Roll out each pastry portion
- Roll each wheel lightly with the rolling pin to fit 2 x 12-hole non-stick fairy cake tins.
- STEP 4
- Press pastry into the tin
- Press the pastry circles into the tins and mould into the tins to make thin cases. Chill until needed.
- STEP 5
- Make the infused syrup
- Heat the oven to 220C/fan 200C/gas 7. Make a sugar syrup by bringing the sugar, 200ml water, lemon zest and cinnamon stick to the boil. Reduce until syrupy, allow to cool, then remove the cinnamon and lemon. Whisk the eggs, egg yolks and cornflour until smooth in another large pan.
- STEP 6
- Making custard
- Heat the milk and vanilla pod seeds in a separate pan until just below the boil. Gradually pour the hot milk over the eggs and cornflour, then cook on a low heat, continually whisking.
- STEP 7
- Add syrup to custard
- Add the cooled sugar syrup to the custard and whisk until thickened slightly.
- STEP 8
- Pour custard into the tins
- Pour the custard through a sieve. Pour into the pastry cases and bake for 15 minutes until the pastry is golden and the custard has darkened.
- STEP 9
- cool and dust with icing sugar
- Cool completely in the tins then sift over icing sugar and ground cinnamon to serve.
Cooking notes
Baked goods are unforgiving with rounding — use weights rather than volumes whenever possible, and verify pan capacity if you scale up or down significantly.
For volume-to-weight conversions of any ingredient — flour, sugar, butter, salts — use the ingredient converter. To translate the recipe's oven temperature between °C, °F and gas mark, see the temperature converter.
When you scale this recipe up or down, remember that cooking time does not scale linearly. A doubled cake takes longer, but not twice as long; a doubled soup takes roughly twice as long. The cooking-time guide gives sensible starting estimates by dish geometry.
Scaling notes
Scaling Portuguese custard tarts
Portuguese custard tarts is written for around four servings as it stands on this page — scaling it up for a party or down for a meal-for-one is the small math problem most home cooks face every week. Here's how this particular dish responds to scaling, what changes linearly, and what doesn't.
Desserts are the most scaling-sensitive category, and Portuguese custard tarts is no exception — the leavening, fat, and liquid ratios all interact. Doubling means a doubled pan AREA (not diameter), and bake time scales by the cube root of the volume change: a doubled cake takes about 26 % longer, not 100 %. Weigh ingredients in grams rather than measuring in cups for consistent results.
This recipe calls for eggs, which are the trickiest ingredient to scale to non-integer multiples. A US "large" egg weighs about 50 g; if a fractional scaling lands on, say, 1.5 eggs, beat one egg and weigh 25 g of the beaten mixture rather than guessing. The same goes for halving recipes — half an egg is 25 g of beaten egg, not a dramatic estimate.
Because this recipe is built around flour and sugar, weighing in grams (rather than measuring cups) is what separates a consistent bake from a one-time win. A cup of all-purpose flour can weigh 113 g or 150 g depending on how you scoop — that's a 30 % swing that ruins texture.
Skip the math entirely — ScaleRecipe's scaler rewrites every ingredient line above with proper culinary fractions and smart unit promotion the moment you change the serving count. Open the scaler →
Beyond the recipe
Substitutions & make-ahead — Portuguese custard tarts
Two things home cooks ask about most when they're outside the recipe's exact assumptions: what swaps work for which ingredients, and how the dish behaves when you make it ahead. Both depend on what Portuguese custard tarts is doing structurally — here's the practical version.
Substitution ideas
Eggs
For binding (cookies, quick breads, meatballs): 1 large egg ≈ 1 tbsp ground flaxseed + 3 tbsp water, rested 5 minutes until gelled — structurally closest to a real egg. For moisture without structure (cakes, brownies): ¼ cup unsweetened applesauce or mashed banana per egg, accepting some loss of rise.
Dairy milk
Unsweetened soy milk substitutes 1:1 in custards and baked goods (the protein content matches). Oat milk gives a creamier mouthfeel for soups and coffee drinks. Almond milk works for lighter applications. Skip coconut milk in savoury recipes unless the dish calls for it — the flavour is unmistakable.
All-purpose flour
For gluten-free, a 1-to-1 gluten-free baking blend (one that contains xanthan gum) is the most reliable swap. For texture variations: bread flour gives chewier results; cake flour gives more tender. Avoid almond or oat flour as a 1:1 swap — they don't form gluten and most recipes structurally depend on it.
For weight-based swaps and arbitrary quantities, the ingredient density converter and the cup-to-grams chart cover most pantry staples.
Make-ahead and storage
Most desserts in Portuguese custard tarts's family can be made one day ahead, but storage matters more than for savoury dishes. Cakes and breads go in an airtight container at room temperature — refrigeration stales them faster than room air. Custards, cream-based fillings, and any dessert with eggs as a structural ingredient must refrigerate. For freezer storage, unfrosted cake layers wrap tightly and keep 2 months; frosted versions ice-crystal within 3-4 weeks.
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Portuguese custard tarts
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Volume
Tablespoons, teaspoons, cups, ml, fluid ounces — every culinary volume unit, with US/metric/imperial cups handled distinctly.
OpenWeight
Grams, ounces, pounds, kilograms — exact for any ingredient, plus the volume-to-weight conversions for ~40 pantry staples.
OpenTemperature
Fahrenheit, Celsius, gas mark — translate any oven temperature, with notes on conventional vs convection.
OpenCooking time
The cube-root rule for scaling up, the differences between meat / cake / soup geometry, and sensible starting estimates.
OpenPan size
9-inch round vs 8-inch square vs 13×9. The math is surface area, not diameter — and the converter shows you both.
OpenLength
Inches and centimetres — for when a recipe says “cut into 1-inch pieces” and your ruler is metric.
OpenIngredient density
A cup of flour weighs 120 g; a cup of honey weighs 340. The full table of ~40 staples, with sources.
OpenOpen in main scaler
Edit the recipe text, scale by serving count, and copy the result. Same parser as the in-page scaler, more room to work.
OpenFrom the journal
Original essays on the small details.
The why behind the technique — original writing on the ingredient and equipment choices that separate a good cook from a frustrated one.
Reading a recipe like a chef
The 30-or-so recipe terms that show up most often, decoded
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Cooking for one — scaling principles
The math, the practical realities, and the recipes designed for one from the start
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How long do leftovers actually last?
Beyond the USDA's 3–4 days: the variables that actually determine the safe window
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Where this recipe sits in the wider tradition.
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