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Baked Onions

Baked onions are onions baked with cream or milk, salt, cracker crumbs, and butter until browned.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

Baked Onions

Oven, in the book's wordsA quick oven

Ingredients

Directions

The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Boil the onions until tender, then drain.

  2. Cut the onions in halves or leave them whole.

Assemble and bake

  1. Place the onions in a baking dish.

  2. Pour the cream or milk over the onions and sprinkle with salt.

  3. Cover the top with cracker crumbs.

  4. Cut the butter into small pieces and place over the top.

  5. Bake in a 400°F (200°C) oven until browned.

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. Cream + buttertop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

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

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

    Shared aroma: decanal (soap, orange peel).

  3. Onion + creamtop 18% of all pairs
    Smell alikelow
    Cooked together10,827 recipes

    Shared aroma: 2-nonanone (fruity, floral).

Onion and cream barely smell alike, yet cooks put them together in 10,827 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 main body of the dish and turn sweet and soft as they cook.
Cream or milk
Adds moisture and richness, keeping the onions tender in the oven.
Cracker crumbs
Form a crisp topping that browns in the oven.
Butter
Adds fat that helps the topping brown and gives a rich flavor.

The step that matters

Bake until browned. Browning comes from heat acting on the crumbs and butter, so the top can darken before the dish is fully heated through. Check the color and stop when the top is golden, not pale or burnt.

Swap the onion

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

  1. Potatofits about as well
  2. Onionthe original
  3. Leekfits about as well
  4. Chivefits less well

Fit is the average pairing score against cream, butter. 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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