Peanut Butter Cookies

Our Granny (my dad's mother, Helen Mesa), would send us a box of homemade cookies every year. This is one of those cookie recipes.

1/2 c. butter or margarine
1/2 c. peanut butter
1/2 c. white sugar
1/2 c. brown sugar
1 egg
1 1/4 c. flour
3/4 tsp. baking soda
1/2 tsp. baking powder
1/4 tsp. salt
1 c. chopped nuts

*Cream butter, peanut butter, and sugars. Add the egg, and mix well.
*Sift dry ingredients separately, then add to butter mixture.
*Form into walnut-sized balls. Put on cookie sheet and press with a salad fork.
*Bake on the top oven rack 12-15 minutes at 350 degrees. Let cool before removing from cookie sheet.