Notes
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Step 1 note:
If beating with a hand mixer rather than a stand mixer, 7 minutes+ may be necessary. Don’t shortcut this step. Stop to scrape down the bowl as necessary. Batter may seem oily; this is okay.
Note regarding peanut butter:
Although natural peanut butter or homemade peanut butter may work, I recommend using storebought peanut butter like Jif, Skippy, Peter Pan or similar so that cookies bake up thicker and spread less. Using natural or homemade peanut butter tends to result in thinner and flatter cookies that are prone to spreading while baking.
Storage:
Cookies will keep airtight at room temperature for up to 1 week, or in the freezer for up to 4 months. Alternatively, unbaked cookie dough can be stored in an airtight container in the refrigerator for up to 5 days, or in the freezer for 4 months, so consider baking only as many cookies as desired and save the remaining dough to be baked in the future when desired.