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Dessert

Peanut Butter Cookies

A simple cookie made with peanut butter, whole wheat flour, baking soda, brown sugar, water, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Peanut and wheat match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 151 recipes. Both carry 2-acetyl-1-pyrroline, which smells popcorn, roasted. The science ↓

Peanut Butter Cookies

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.

Make the dough

  1. Dissolve the baking soda in the water.

  2. Mix the dissolved soda with the peanut butter.

  3. Add the sifted flour, salt, and brown sugar to the mixture, then mix well until combined.

Shape and bake

  1. Roll the dough very thin and cut it into strips.

  2. Bake in a 400°F (200°C) oven until brown.

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. Peanut + wheattop 5% of all pairs
    Smell alikestrong
    Cooked together151 recipes

    Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).

  2. Wheat + flourtop 12% of all pairs
    Smell alikemoderate
    Cooked together4,373 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Butter + wheattop 14% of all pairs
    Smell alikemoderate
    Cooked together2,002 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  5. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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

Peanut butter
Provides fat and rich nutty flavor, helping the dough hold together and stay tender.
Whole wheat flour
Builds the structure of the dough, giving the cookies their body as it sets.
Baking soda
Reacts with the mixture to lift the dough and promote browning during baking.
Brown sugar
Adds sweetness and moisture, and helps the cookies brown and develop flavor.

The step that matters

Dissolve the baking soda in the water first. Baking soda needs to be fully dissolved and spread evenly through the dough. Undissolved pockets can leave bitter, soapy spots and uneven rising.

Swap the peanut

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

  1. Almondfits better
  2. Milletfits better
  3. Pistachiofits better
  4. Peanutthe original

Fit is the average pairing score against butter, wheat, flour, sugar. 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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