Peanut butter cookies over time
285 of the 326 recipes carry a publication date, from 2004 to 2026. Below: how many pages each year, whether the typical batch changed between the oldest and newest, and the oldest and newest pages themselves.
A date here is the one the page gives for itself: when it was published, or last updated. Sites often refresh an old recipe and its date together, so read these as when the pages went up, not when the recipes were created.
Recipes per year
Dated pages by the year they give. The first bar gathers the 1 pages from before 2007. Shading marks the periods compared below.
How the typical batch changed
No ingredient shows a clear change between peanut butter cookie pages dated before 2017 and those dated 2023 or later. The medians move a little from period to period, but by no more than chance would with this many recipes.
| Per 100 g flour | Before 201768 recipes | 2017 to 202071 recipes | 2021 to 202263 recipes | 2023 and later83 recipes |
|---|---|---|---|---|
| Peanut butterNo clear change | 91% | 103% | 83% | 92% |
| ButterNo clear change | 60% | 64% | 61% | 63% |
| SugarNo clear change | 100% | 112% | 101% | 112% |
| EggNo clear change | 32% | 28% | 27% | 29% |
| LeaveningNo clear change | 2.4% | 2.4% | 2.4% | 2.7% |
| SaltNo clear change | 0.8% | 1% | 0.9% | 1% |
Each cell is the median baker's percentage in that period: grams of the ingredient per 100 g of flour. Higher and lower compare the newest period with the oldest, only where the change is clear (see how below). Periods are cut at year boundaries so each holds about the same number of recipes.
Ingredients that gained or lost ground
Share of each period's recipes that list the ingredient. Only changes between the oldest and newest periods too large to be likely chance are listed.
| Recipes using | Before 2017 | 2017 to 2020 | 2021 to 2022 | 2023 and later |
|---|---|---|---|---|
| Baking sodaMore common | 61% | 84% | 87% | 86% |
Oldest and newest pages
Oldest dates
Jul 26, 2004
Chocolate-Peanut Butter Candy Cookies · bettycrocker.comNov 1, 2008
Cookies au beurre de cacahuètes et cacao · ptitchef.comNov 2, 2008
Cookies au beurre de cacahuètes, cacahuètes et pralinoise · ptitchef.comMay 20, 2009
Biscuits moelleux au beurre de cacahuètes et chocolat · ptitchef.comMar 15, 2010
Cookies américains au beurre de cacahuète : la meilleure recette · marmiton.org
Newest dates
Sep 8, 2026
Peanut Butter Oreo Cookies · iambaker.netSep 6, 2026
Maple Peanut Butter Cookies · thebakingchocolatess.comAug 28, 2026
Goûter de la rentrée : cookies beurre de cacahuète · cuisineaz.comAug 18, 2026
Peanut Butter Cut-Out Cookies · bakingamoment.comAug 6, 2026
Sourdough Peanut Butter and Jelly Cookies · littlespoonfarm.com
How the dates are read
Each date is the publication date in the recipe page's own structured data. 17 of the 326 recipes have none, or one without a year (such as “December 3”), and are left out.
24 more carry a date their site gave to many pages at once, which marks a site move or redesign rather than a publication: 2018-01-01 on tasteofhome.com (222 pages across Recipe Lab, 9 of them here), 2025-01-17 on cuisine.journaldesfemmes.fr (8 pages across Recipe Lab, 7 of them here) and 2006-10-23 on marmiton.org (74 pages across Recipe Lab, 2 of them here), and 5 more like it. They are left out too.
A change counts as clear when the newest period's median differs from the oldest period's by at least a tenth and a rank test puts the gap at 2.5 standard errors or more. For the share of recipes using an ingredient, the bar is 3 standard errors and 8 percentage points. Every ingredient is tested, so a lower bar would flag chance differences on most pages.
2026 is still in progress, so its bar is short for a reason that has nothing to do with baking.