France · Side
Boulangère Potatoes
About this recipe
This recipe comes from a regional cooking tradition that draws on its own pantry, technique, and culinary history. The full editorial context for this cuisine is something we're still developing; the scaling and conversion tools above work the same regardless of origin.
As a side dish, Boulangère Potatoes is designed to support a main course rather than command attention — built around vegetables, grains, or pulses with seasoning that lifts rather than dominates.
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
- Heat oven to 200C/fan 180C/gas 6. Fry the onions and thyme sprigs in the oil until softened and lightly coloured (about 5 mins).
- Spread a layer of potatoes over the base of a 1.5-litre oiled gratin dish. Sprinkle over a few onions (see picture, above) and continue layering, finishing with a layer of potatoes. Pour over the stock and bake for 50-60 mins until the potatoes are cooked and the top is golden and crisp.
Cooking notes
Scaling works best when you weigh ingredients rather than measure by volume — small differences in packing can compound at higher multipliers.
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 Boulangère Potatoes
Boulangère Potatoes 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.
Side dishes scale more predictably than most categories. Boulangère Potatoes cooks in roughly the same time at 1× and 2× because sheet-pan or sauté geometry doesn't change with batch size — only the depth of the layer does. Adjust seasoning by 1.5× when doubling, and watch the pan capacity: crowding a roasting tray means steaming, not browning.
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 — Boulangère Potatoes
If you're cooking Boulangère Potatoes for a future meal (or doubling up for leftovers), here's how this dish handles storage, reheating, and the timing decisions most recipes don't spell out.
Make-ahead, storage, and reheating
Side dishes vary widely in their make-ahead tolerance. Boulangère Potatoes keeps well refrigerated if it's a roast, grain, or pulse dish — though roasted vegetables especially benefit from a hot-oven reheat (425 °F / 220 °C) to recapture some of their browned crispness. Microwaving makes them mushy. Mashed potatoes and creamed grains need a splash of milk or broth on reheating. Vinaigrette-dressed salads dress at serving time; mayonnaise-based salads benefit from overnight rest.
Recipe video
Boulangère Potatoes
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Cooking aids
Tools to use while you cook this.
Each opens in a new tab so the timer keeps running. The math is auditable on the guide page below each converter, with worked examples and where the numbers come from.
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
Read essayMay 4, 2026
Cooking for one — scaling principles
The math, the practical realities, and the recipes designed for one from the start
Read essayMay 4, 2026
How long do leftovers actually last?
Beyond the USDA's 3–4 days: the variables that actually determine the safe window
Read essayMay 4, 2026
Go deeper
Where this recipe sits in the wider tradition.
Each guide below is a real essay on the cuisine or the category — pillars, staples, techniques worth learning — paired with a curated grid of recipes filed under it.
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