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Escalloped Onions

A baked dish of boiled onions layered with butter, flour, cream, and bread crumbs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Escalloped Onions

Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Escalloped Onions

Oven, in the book's wordsA slow oven

Ingredients

Directions

The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the onions

  1. Peel and boil the onions in salted water until tender.

  2. Drain the onions and layer them in a baking dish.

Layer and bake

  1. Add bits of butter and a sauce made from flour and cream between the layers.

  2. Continue layering until the dish is full.

  3. Sprinkle the top with bread crumbs and additional bits of butter.

  4. Bake in a slow oven at 300°F (150°C) for nearly 1 hour, adding enough milk to nearly cover the onions.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Photo for illustrative purposes only · Contact us to use it

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Butter + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

  2. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  3. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Onion + breadtop 15% of all pairs
    Smell alikemoderate
    Cooked together8,676 recipes

    Shared aroma: 2,4-decadienal (seaweed).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Onions
Form the bulk of the dish and turn soft and sweet as they cook.
Flour
Thickens the cream into a sauce that binds the layers together.
Cream
Makes a rich sauce that keeps the onions moist during baking.
Bread crumbs
Form a crisp, browned topping over the dish.
Butter
Adds richness and helps the top brown as it bakes.

The step that matters

Baking with milk added. The onions must be tender before layering, and the dish should be baked low and slow with enough liquid covering the onions. Too little liquid or too high heat can dry the dish or scorch the topping before the onions soften and the sauce sets.

Swap the onion

How well each one fits the dish's main ingredients (butter, flour, cream, bread):

  1. Leekfits better
  2. Shallotfits better
  3. Chivefits better
  4. Onionthe original

Fit is the average pairing score against butter, flour, cream, bread. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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