Wookie Cookies

1 cup butter

1 cup white sugar

½ teaspoon baking soda

½ teaspoon baking powder

1 ½ cups all-purpose flour

½ cup chopped walnuts

1 cup crisp rice cereal

1 teaspoon vanilla extract

Cream margarine and sugar together. Without sifting add remaining ingredients and mix well.

Chill dough for 1/2 hour.

Shape into balls and press firmly with a fork. Bake on ungreased cookie sheets for 10 to 15 minutes at 325 degrees F (165 degrees C).