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Scolloped Onions

Baked onion casserole with breadcrumbs and milk.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Bread and milk are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 11,466 recipes. Both carry 2-undecenal, which smells sweet. The science ↓

Scolloped Onions

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 the onions

  1. Peel and boil the onions until tender.

  2. Drain and cut each onion into several pieces.

Assemble and bake

  1. In a baking dish, layer the onion pieces with seasoned bread crumbs.

  2. Moisten the layers with milk.

  3. Bake in a 350°F (175°C) oven until nicely 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. Bread + milktop 11% of all pairs
    Smell alikemoderate
    Cooked together11,466 recipes

    Shared aroma: 2-undecenal (sweet).

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

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

  3. Onion + milktop 20% of all pairs
    Smell alikemoderate
    Cooked together13,418 recipes

    Shared aroma: hexanal (green, grassy).

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 casserole and become sweet and soft as they cook.
Seasoned bread crumbs
Add structure and savory flavor between the onion layers and help the dish brown.
Milk
Moistens the crumbs and layers so the casserole stays tender rather than dry.

The step that matters

Bake until nicely browned. Browning comes from dry oven heat reacting with the surface sugars and proteins in the crumbs and onions. Pulling the dish too early leaves it pale and under-set, while baking too long can dry the milk-moistened layers.

Swap the onion

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

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

Fit is the average pairing score against bread, milk. 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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