Cream butter, peanut butter and both sugars together.
Add eggs, one at a time, beating well.
Add baking soda, powder and vanilla.
Stir in flour.
Roll into balls, roll in sugar. Flatten cookies, using a fork, in a criss-cross pattern.
Bake on ungreased cookie sheet at 350 degrees for 6-7 minutes or adjust to suit your oven and size of cookies!