Start by gathering all your ingredients and tools. Measure your flour, sugars, and peanut butter.

In a medium bowl, whisk together the flour, baking soda, and salt.

In a large mixing bowl, beat the softened butter until creamy, then gradually add the brown sugar and granulated sugar until fluffy.

Mix in the egg, followed by the creamy peanut butter and vanilla extract. Ensure everything is fully combined.

Slowly add the dry ingredients to the wet mixture, mixing on low speed until combined.

Cover the bowl with plastic wrap or transfer to a sealable container, and refrigerate the dough for 1-2 hours.

Preheat your oven to 350°F (177°C) and prepare baking sheets.

Scoop out the chilled dough and roll into balls, then roll each ball in the reserved granulated sugar.

Flatten each dough ball slightly using a fork to create a crisscross pattern.

Bake for 10-12 minutes or until the edges are lightly golden, then cool on a wire rack.