A peanut butter cookie is a type of cookie that is distinguished for having peanut butter as a principal ingredient. The cookie generally originated in the United States, its development dating back to the 1910s.
1. Cream butter, peanut butter, and sugars together in a bowl; beat in eggs.
2. In a separate bowl, sift flour, baking powder, baking soda, and salt; stir into butter mixture. Put dough in refrigerator for 1 hour.
3. Roll dough into 1 inch balls and put on baking sheets. Flatten each ball with a fork, making a crisscross pattern. Bake in a preheated 375 degrees F oven for about 10 minutes or until cookies begin to brown.
