Ingredients

1 cup creamy peanut butter 

1/2 cup granulated sugar 

1/2 cup packed light-brown sugar 

1/2 cup semisweet chocolate chips 

1 large egg, beaten 

1 teaspoon pure vanilla extract 

Preparation

Preheat oven to 350 degrees, with racks in upper and lower thirds. In a large bowl, combine all ingredients and stir with a wooden spoon until smooth. Divide dough into 24 portions, about 1 heaping tablespoon each. Roll each piece between your hands to form a smooth ball. Place dough balls, 1 inch apart, on two ungreased baking sheets. Using a fork, press on dough in two directions to form a crosshatch pattern.

Bake cookies until puffed and lightly golden, 10 to 12 minutes, rotating sheets halfway through. Let cookies cool on sheets.