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Dessert

Nut Bars

Nut Bars are baked bars made with brown sugar, egg, walnuts, baking soda, water, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Walnut and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 5,873 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Nut Bars

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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare

  1. Preheat the oven to 350°F (175°C).

Make the batter

  1. In a bowl, mix brown sugar and egg until combined.

  2. Add walnut bits, dissolved baking soda in hot water, and flour. Mix well.

  3. Spread the mixture in a thin layer on a baking sheet.

Bake and cut

  1. Bake for 20-25 minutes or until golden brown.

  2. Let cool and cut into bars.

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. Walnut + flourtop 12% of all pairs
    Smell alikemoderate
    Cooked together5,873 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Walnut + meattop 13% of all pairs
    Smell alikemoderate
    Cooked together1,035 recipes

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

  3. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  4. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

Egg and flour barely smell alike, yet cooks put them together in 106,462 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

Brown sugar
Adds sweetness and moisture, and helps the bars brown and stay chewy.
Egg
Binds the mixture and adds structure as it sets in the oven.
Walnut meats
Add texture and richness, and give the bars their nutty flavour.
Baking soda
Raises the batter slightly and helps the bars brown in the oven.
All-purpose flour
Provides a small amount of structure so the batter holds together.

The step that matters

Spread the mixture in a thin layer. A thin layer lets the bars bake through evenly and brown at the same rate. A thick layer can stay gooey in the centre while the edges over-brown.

Swap the walnut

How well each one fits the dish's main ingredients (sugar, egg, meat, flour):

  1. Almondfits better
  2. Chestnutfits about as well
  3. Walnutthe original
  4. Pistachiofits about as well

Fit is the average pairing score against sugar, egg, meat, flour. 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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