Skip to main content
Main

Scalloped Onions

A baked dish of boiled onions topped with bread crumbs and cream sauce.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
Jump to recipe ↓
Scalloped 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 ↓

Scalloped Onions

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the onions

  1. Boil the sliced onions in salted water until tender.

  2. Make the cream sauce and add the well-drained onions.

Assemble

  1. Melt the butter and mix it with the bread crumbs, salt, and pepper.

  2. Spread half of the crumbs in a baking dish, cover with the onion mixture, and top with the remaining crumbs.

Bake

  1. Bake on the upper rack of the oven at 400°F (200°C) for about 15 to 20 minutes, or until the top is lightly 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.

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. Cream + saucetop 9% of all pairs
    Smell alikemoderate
    Cooked together4,787 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

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

  5. Butter + saucetop 15% of all pairs
    Smell alikelow
    Cooked together15,338 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Butter and sauce barely smell alike, yet cooks put them together in 15,338 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
Provide the main vegetable bulk and mild sweetness once cooked until tender.
Butter
Adds richness and helps the bread crumbs brown on top.
Stale bread crumbs
Form a crisp, golden topping and absorb some moisture from the sauce.
Cream sauce
Supplies moisture and a creamy binding that keeps the onions saucy under the crumbs.

The step that matters

Bake until the top is lightly browned. Baking at 400°F for only about 15 to 20 minutes is enough to brown the crumbs. Browning comes from the Maillard reaction and butter, so checking the top prevents underbaking or scorching.

Swap the onion

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

  1. Capsicumfits better
  2. Potatofits about as well
  3. Tomatofits about as well
  4. Onionthe original

Fit is the average pairing score against butter, bread, cream, sauce, pepper. 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.

You might also like

Brown BreadBrown Bread461 recipesWhite BreadWhite Bread80 recipesBread OmeletteBread Omelette60 recipesOatmeal BreadOatmeal Bread51 recipes