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Cooking & Food Science Simple #cookies#fat#spread

Cookie Spread by Fat Type

Butter, shortening, and oil produce thin, thick, and spread cookies respectively.

A free, animated cookie spread by fat type you can read here or embed on any website, from Scrollchart.

Cookie Spread by Fat Type

Cookie Spread by Fat TypeFat melt point and water content determine how far a cookie spreads and how tall it bakesButter80% fat, 18% water90mm spread7mm thickWide & thinButter + Shortening (50/50)50% butter, 50% shortening76mm spread10mm thickBalanced spreadShortening100% fat, no water60mm spread14mm thickThick & tallOilLiquid fat, no emulsion95mm spread5mm thickFlattest result

Cross-section comparison of finished cookie thickness/spread for butter, shortening, oil, and butter-shortening blends.

Good for

  • Cookie troubleshooting articles explaining why cookies spread too thin or stay too thick
  • Baking science explainers on fat function for cooking-blog audiences
  • Recipe development guides choosing fat type for specific cookie texture targets

Source & accuracy

This cookie spread by fat type is an editorial illustration built to represent the concept accurately. Where it shows figures, they are typical or representative values chosen to make the relationship clear, not a single underlying dataset. The diagram and its explainer are reviewed and maintained centrally, and updated over time as understanding improves.

Fat type determines how quickly cookies spread during baking

Butter is a plastic fat: solid at room temperature with a moderate melting point (32-35C). As cookies bake, butter slowly melts, allowing the dough to flow and spread gradually, creating thin, crispy-edged cookies. Shortening has a higher melting point and stays solid longer, slowing spread and yielding thicker, chewier cookies. Oil remains liquid at all baking temperatures, spreading immediately and producing the thinnest, greasiest cookies.

The texture and flavor also vary. Butter delivers rich, savory notes. Shortening is flavorless and produces a crumbly texture. Oil keeps cookies softer longer and produces a denser crumb.

Emulsification and water content amplify the effect

Butter contains about 15-20% water, which generates steam during baking, promoting spread and lift. Shortening is pure fat with no water, so cookies rise less and spread less. Oil-based cookies minimize both effects. Emulsifiers (like lecithin in butter) also affect how the fat integrates with flour, altering crumb structure and final texture.

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Reference

What this is
A free, embeddable, animated cookie spread by fat type for any website.
Who uses it
Cooking blogs.
How to embed
Copy one line of HTML. No signup. No watermark. Works in WordPress, Webflow, Ghost, Substack, plain HTML.
File size
iframe embed, ~80 KB gzipped (loads on demand, does not block your page paint).
License
Free forever. Editorial explainer text included; updated centrally over time.
URL
scrollchart.com/diagram/cookie-spread-fat

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Frequently asked questions

Where can I get a free animated "Cookie Spread by Fat Type" for my website?
Scrollchart provides "Cookie Spread by Fat Type" as a free, embeddable animated diagram you can add to any website with one line of HTML. No signup is required and there is no watermark. The diagram and its explainer text are served from scrollchart.com, so the embed stays current without any maintenance on your end.
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