Preheat
oven to 375 degrees F.
In
a large bowl, mix flour, salt, and baking soda. Add
butter and peanut butter and mix until smooth. Add sugars
and beat until light and fluffy. Add eggs and vanilla
and mix until smooth.
Make
balls out of level tablespoons of dough - add flour
if needed. Roll in sugar.
Bake
2 inches apart on ungreased cookie sheet for 8 minutes.
Remove
from oven and add 1 kiss to the center of each cookie.
Return to the oven and bake for 2 more minutes.
Cool
and enjoy.