Preheat oven to 350℉. Line baking sheets with parchment paper or silicone baking mats.
In a medium mixing bowl or stand mixer fitted with the whisk attachment, add sugar and peanut butter and beat on medium speed 3 minutes until light and fluffy.Add egg, vanilla, baking soda and salt on medium-low speed until just combined, scraping down the sides with a rubber spatula as needed.
1 cup peanut butter, 1 cup white granulated sugar, 1 large egg, ¼ teaspoon salt, 1 teaspoon vanilla extract, 1 teaspoon baking soda
Using a medium cookie dough scoop or a spoon, roll into 1" balls and space on cookie sheet. Bake in the center of pre-heated oven 11 minutes, or until slightly golden on the edges and just set. Remove from oven and allow to cool 1 minute. Using a rubber spatula, transfer cookies to a wire cooling rack.
Video
Notes
Use a cookie dough scoop for consistent cookie size, which helps all cookies bake evenly.Cookies will continue to bake on hot cookie sheet. Transfer to a cooling rack for the best texture.If cookies become crisp after setting out, warm in the microwave 10 seconds.
Substitutions
Use creamy or crunchy peanut butter, your preference.
Variations
Add up to 1/2 cup chocolate chips
Add up to 1/2 cup chopped nuts
Storage Notes
Store cooled cookies in an airtight container at room temperature up to five days or freeze up to 3 months. Bring to room temperature or warm to enjoy.