Classic, soft, and chewy peanut butter cookies with a delightful criss-cross pattern on top.
Preheat the oven to 375°F (190°C). Line baking sheets with parchment paper.
In a medium bowl, whisk together flour, baking soda, and salt.
In a large bowl, beat butter, peanut butter, granulated sugar, and brown sugar with an electric mixer until light and fluffy.
Add egg and vanilla extract to the butter mixture. Beat until well combined.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Roll the dough into 1-inch balls and place them on the prepared baking sheets. Use a fork to make a criss-cross pattern on top of each cookie, gently pressing down to flatten slightly.
Bake for 8-10 minutes, or until the edges are lightly golden. Let cool on the baking sheets for 5 minutes before transferring to wire racks to cool completely.
Serve the cookies at room temperature. Store any leftovers in an airtight container at room temperature for up to 1 week.