1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. In a large mixing bowl, combine the peanut butter, sugar, egg, vanilla extract, baking soda, and salt. Mix until all ingredients are well incorporated and the dough is smooth.
3. Using a spoon or cookie scoop, drop tablespoon-sized balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
4. Flatten each ball slightly with a fork, creating a crisscross pattern on the top of each cookie.
5. Bake in the preheated oven for 10-12 minutes or until the edges are golden but the centers are still soft.
6. Remove from the oven and let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

Just like my abuela taught me, trust your senses as you bake. The cookies will continue to firm up as they cool, so resist the urge to overbake them!