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Onions and Cheese

A baked dish of sliced onions topped with cheese, bread crumbs, pepper, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cheese and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,130 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Onions and Cheese

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Peel and thinly slice the onions.

Bake and finish

  1. Layer the onions in a baking dish and sprinkle with grated cheese, pepper, and salt.

  2. Cover the dish and bake at 350°F (175°C) for about 30 minutes until the onions are tender.

  3. Remove the cover, top with grated bread and cheese, and brown slightly under the broiler.

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.

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. Cheese + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together2,130 recipes

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

  2. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

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

  4. Onion + cheesetop 16% of all pairs
    Smell alikemoderate
    Cooked together4,849 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Pepper + breadtop 16% of all pairs
    Smell alikemoderate
    Cooked together20,964 recipes

    Shared aroma: 2-nonenal (fatty, green).

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

What each ingredient does

Onions
Provide the main body of the dish, softening into tender layers as they bake under cover.
Grated cheese
Melts into the onions and browns on top, adding richness and savory flavor.
Grated bread
Adds a crisp, golden topping when broiled, contrasting with the soft onions.

The step that matters

Covered baking until tender. Baking the onions covered lets trapped steam soften them fully before the topping is browned. Uncovering too early can leave the onions firm and the top scorched before the centre is cooked through.

Swap the onion

How well each one fits the dish's main ingredients (cheese, pepper, bread):

  1. Capsicumfits better
  2. Tomatofits better
  3. Mustardfits better
  4. Onionthe original

Fit is the average pairing score against cheese, pepper, 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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