Set your oven to175°C /350°F (155°C fan-forced). Line a baking tray with parchment paper.
In a bowl, combine peanut butter, sugar, and egg. Stir until a thick dough forms.
Scoop out small portions of dough (about 1.5 tablespoons each /35 g) and roll them into balls. Place them on the prepared baking tray.
Use a fork to press each cookie down in a crisscross pattern.
Bake for 10–12 minutes or until the edges are set.
Let the cookies rest on the tray for 5 minutes, then transfer them to a wire rack to cool completely.
Notes
Use good peanut butter: Since peanut butter is the star, go for one that tastes great on its own. Smooth peanut butter gives a softer texture, while crunchy adds a nice bite.Mix well but don’t overdo it: Just stir until everything comes together. Overmixing can make the cookies too dense.The crisscross pattern isn’t just for looks: Pressing the cookies down helps them bake evenly.Keep an eye on them: They bake fast! Take them out when the edges look set. They’ll still be soft in the middle but will firm up as they cool.Let them cool: Fresh out of the oven, they’re delicate. Give them time to cool on the tray before moving them.