1 stick butter, softened (4oz/115g)

0.5cup (100g) white sugar

0.5cup (115g) brown sugar

1 large egg

1 cup (240g) peanut butter (smooth or chunky)

0.5tsp vanilla

05.tsp baking soda

0.5tsp salt

1.5 cups (190g) all-purpose flour

preheat oven to 375F. beat butter in stand mixer.

gradually mix in sugars, blend until creamy.

beat in eggs, peanut butter, vanilla, baking soda, salt.

gradually mix in flour.

shape into 1-inch balls, arrange 2 inches apart. Press flat with a fork.

bake 5-6 minutes, switch oven racks and rotate, bake 5-6 minutes (until firm).

let cool on sheets for 2-3 minutes. Move to wire rack to finish cooling.