These salty-sweet-crunchy confections make the best snack.
Preheat oven to 350 degrees. With an electric mixer, beat peanut butter, sugar, and butter until smooth. Beat in egg.
On low speed, mix in flour and baking powder until a dough forms.
Pinch off dough by the tablespoon; roll into balls. Place 2 inches apart on baking sheets (lined with parchment paper, if desired). With a floured fork, press balls in a crisscross fashion, flattening to a 1/2-inch thickness.
Bake cookies, rotating sheets halfway through, until lightly golden, 18 to 22 minutes. Cool cookies on a wire rack. Store in an airtight container at room temperature up to 1 week.
