The short answer: multiply every ingredient in your quiche recipe by 0.5×, then fix the exceptions — salt (to taste) and cooking time (check early). The full scaled table below uses a standard quiche recipe that serves 4 and cooks in 35–40 minutes in the oven. Scaled, it serves about 2 servings.
All amounts in this guide are approximate, and the recipe below is an example — a standard home-cooked quiche recipe — so you can see the scaling worked out in numbers. Your own recipe's amounts will differ; apply the factor 0.5× to whatever your recipe calls for, and use the salt and time rules on this page for the exceptions. quiche is an egg custard in a pastry case, and scaling it is mostly about the dish: the eggs, cream and cheese scale cleanly, but the pastry, the blind bake and the oven time all depend on the size of the tin, and a quiche that is too deep for its tin never sets in the middle. Gram figures, where given, use 120 g per cup of flour spooned and levelled (King Arthur Baking), 200 g per cup of granulated sugar and 227 g per cup of butter — and every result here is approximate, so weigh ingredients on a kitchen scale when it matters.
The scaled recipe, in a table
| Ingredient | Original (serves 4) | Scaled ×0.5 (serves about 2) | Note |
|---|---|---|---|
| Eggs | 4 | 2 | |
| Double cream | 300 ml | 150 ml | |
| Gruyère, grated | 100 g | 50 g | |
| Smoked bacon, diced | 150 g | 75 g | |
| Onion, finely chopped | 1 | 1/2 | |
| Shortcrust pastry case | 1 | 1/2 | |
| Butter | 1 tbsp | 1/2 tbsp | |
| Salt | 1/2 tsp | 1/4 tsp | to taste — add most of it, then adjust |
| Black pepper | 1/2 tsp | 1/4 tsp | |
| Nutmeg, grated | 1/4 tsp | 1/8 tsp | |
| Fresh chives, chopped | 2 tbsp | 1 tbsp |
Read the table from left to right: the middle column is the recipe as written, the next column is the same recipe multiplied by 0.5×, and the note column flags the ingredients that break the rule. Salt is listed at the scaled amount, but treat it as a starting point and taste before serving — saltiness depends on the salt you use and the other ingredients, so a flat multiplier is a guess, not a fact. For converting the scaled cups back to grams, use the cups to grams converter, and for flour specifically see cups to grams for all-purpose flour.
What does not scale
Leavening
There is no leavening in quiche, so the leavening rule does not apply directly — but the principle behind it does: not everything in a recipe scales by the same factor. In a baked dish, baking powder and baking soda scale by less than the recipe — about 0.75× when halving, about 1.5× when doubling and about 2× when tripling, all rules of thumb. The same idea applies here to the salt, the seasoning and the cooking time, which are the three things that break the simple multiply-everything rule in a savoury dish.
Salt
Salt scales by feel, not by maths. Multiply it by 0.5 as a starting point, then taste — a quiche with salt scaled flat can taste either flat or salty, because saltiness depends on how much liquid reduces and on the other salty ingredients in the dish. Fine table salt is saltier by volume than kosher salt, so if you switch salts, adjust again. Taste at the end, not the start: the flavour concentrates as the dish cooks, and salt added early tastes stronger by the time it is served.
Cooking time
The cook gets shorter, but not by half. Start checking 5–10 minutes before the recipe time, and take the dish off the heat as soon as it is done — a small batch overcooks fast. Cooking time changes with the depth of the food and the size of the vessel, not with the amount of food. That is why the vessel matters as much as the recipe: the same food in a deeper vessel takes longer, and in a shallower one it takes less. The baking time adjuster works out an adjusted time from the vessel change, and the rule is always the same — start checking 5–10 minutes before the recipe time and test for doneness, whether that is a skewer, a fork or a taste.
The vessel
Use a smaller quiche dish or tart tin: roughly half the capacity of the original. The same amount of food in the original vessel spreads thin, cooks unevenly and dries out. A bigger batch also needs a bigger hob ring or a bigger oven shelf, and it takes longer to come to temperature — factor that into your planning, and do not start the clock until the dish is actually simmering or the oven is actually at temperature. Check the pan size converter before you pour or ladle anything in.
Worked examples
A quiche for a picnic or buffet
The original quiche serves 4 from one tart tin, which is not enough for a picnic or a buffet table. Scale every ingredient by the factor on this page and, crucially, scale the dish: a doubled quiche needs a larger tin or two tins, not a deeper filling in the same tin. Blind-bake the pastry first, fill it no deeper than about 3 cm, and bake until the centre just wobbles. Let it cool completely before slicing for a picnic — a warm quiche falls apart in transit, and a cold one slices cleanly.
Making quiche ahead for lunches
Quiche is a make-ahead lunch, and scaling up means a week of lunches from one bake. Bake the full scaled quiche, cool it completely, and slice it into portions before it goes in the fridge — sliced quiche is much easier to pack than a whole one. Reheat slices in the oven, not the microwave, so the pastry stays crisp, and serve with a simple green salad. It keeps for up to 3 days in the fridge, and the flavour improves overnight.
The mistake that ruins a scaled quiche
The mistake most people make is doubling the filling but keeping the same tin, which gives a deep custard that never sets in the middle while the pastry burns at the edges. The filling depth is the rule: keep it at about 3 cm, whatever the batch size, and use a bigger tin or a second tin. The other mistake is skipping the blind bake, which guarantees a soggy bottom — bake the case until it is pale gold, then add the filling.
Practical guidance
Halving is the hardest scaling to get right, because small quantities punish sloppy measuring: half a teaspoon of salt is easy to overdo, and half an egg is a real problem in a recipe that uses one. Measure the small amounts with proper measuring spoons, not a dinner spoon, and beat an egg and use half of it by weight or volume when a recipe calls for one egg and you need half. A halved batch also cooks in a smaller vessel, and that smaller vessel heats faster — start checking early, and remember that a half batch can go from done to overdone in a few minutes.
When you scale quiche, write the scaled amounts down before you start cooking — do not try to do the maths in your head while the pan is hot. A written list stops the classic error of scaling some ingredients and forgetting others, and it lets you check the shopping list against the pantry before you begin. Weigh the dry ingredients when the recipe depends on them, and measure liquids in a jug rather than pouring from the carton by eye. If your bowl or pot is too small for the scaled batch, mix or cook in two halves and combine them; a spilled half-batch on the counter is worse than an extra bowl to wash. And taste as you go: scaling is arithmetic, but cooking is judgement, and the last taste before serving is the one that matters.
Storage and leftovers
Quiche keeps in the fridge for up to 3 days and is lovely eaten cold the next day, which makes it a great make-ahead lunch. Cool it completely, cover it, and reheat slices gently in the oven — the microwave makes the pastry soggy. It freezes for up to 2 months, though the pastry is never quite as crisp after thawing. The classic failure is a soggy bottom or a custard that never sets. Blind-bake the pastry until it is pale gold before the filling goes in, keep the filling no deeper than about 3 cm, and bake it until the centre just wobbles — it sets as it cools, and a quiche baked until it is firm in the oven is overcooked by the time it reaches the table. When you scale up, leftovers are part of the plan, not an accident — portion them before they go in the fridge, label them with the date and the number of servings, and reheat them gently so the texture survives. A scaled batch that feeds the family tonight and fills the freezer for next week is the best return on the extra cooking time.
Frequently asked questions
How do I know when a quiche is done?
When the edges are set and the centre just wobbles when you shake the tin gently. It will set as it cools, so take it out while it still wobbles — a quiche that is firm in the oven is overcooked by the time you eat it. Start checking 5–10 minutes before the recipe time, and use a knife in the centre: it should come out clean but moist.
Do I need to blind-bake the pastry?
Yes, always. Blind-bake the case until it is pale gold — about 15 minutes with baking beans, then 5 minutes without — before the filling goes in. Without a blind bake, the wet filling soaks into the raw pastry and you get a soggy bottom that no amount of oven time will fix.
Can I freeze quiche?
Yes, for up to 2 months, though the pastry is never quite as crisp after thawing. Cool it completely, wrap it tightly, and thaw overnight in the fridge. Reheat slices in the oven so the pastry crisps up again — the microwave will make it soggy. For the best result, freeze it before baking and bake it from frozen, adding about 10 minutes to the time.
Why is my quiche filling watery?
Usually because the filling was too deep, or because the bacon or vegetables released water into the custard. Cook the bacon and onion first and drain off the fat, keep the filling depth to about 3 cm, and bake until the centre just wobbles. A watery quiche is also a sign it was underbaked — give it a few more minutes next time.
Can I halving a quiche recipe by 0.5×?
Yes — multiply every ingredient by 0.5, except the salt (to taste) and the cooking time (check early). The table on this page works out a standard recipe serving 4 to about 2 servings. Use the recipe scaler to scale your own recipe's exact amounts.
Do I need a different quiche dish or tart tin when I halving quiche?
Use a smaller quiche dish or tart tin: roughly half the capacity of the original. The same amount of food in the original vessel spreads thin, cooks unevenly and dries out. Check the pan size converter before you start, and if you are scaling a baked dish, the baking time adjuster will work out an adjusted time from the vessel change.