Cream peanut butter, butter and sugar together. Blend in eggs and vanilla. Add flour, baking powder, baking soda and salt. Mix well. Shape rounded teaspoons full of dough into
balls. Place on ungreased baking sheets. Flatten slightly and criss-cross with a fork. Bake at 350 degrees for 12 to 15 minutes or until lightly browned. (Watch them...you
don't want them too dark or burned and it happens fast). Makes 7 dozen cookies.