1. Prepare the Dough:
- In a mixing bowl, combine the peanut butter, granulated sugar, and brown sugar. Mix until smooth.
- Add the egg and vanilla extract, and stir until fully incorporated.
- In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet mixture, stirring until a dough forms.
2. Shape the Cookies:
- Scoop about 1 tablespoon of dough and roll it into a ball. Flatten slightly with your hands. For the classic peanut butter cookie look, use a fork to create a crisscross pattern on top.
3. Preheat the Air Fryer:
- Preheat your air fryer to 325°F (160°C) for 2-3 minutes.
4. Cook the Cookies:
- Place a piece of parchment paper in the air fryer basket to prevent sticking. Arrange the cookies in a single layer, leaving space between them (cook in batches if necessary).
- Air fry for 6-8 minutes, or until the edges are lightly golden.
5. Cool and Serve:
- Let the cookies cool in the air fryer basket for 2 minutes before transferring to a wire rack to cool completely.