Peanut Butter Cookies

This is my grandmother Cleone's recipe:

1 cup Shortening
1 cup Sugar
1 cup Brown Sugar
3 Eggs
1 cup Peanut Butter
3 cups Flour
2 tsp Baking Soda
1/4 tsp Salt
1 tsp Vanilla

In a mixing bowl, cream shortening, sugar, and brown sugar together. Then add peanut butter and mix well. Add flour, baking soda, salt, and vanilla. Roll dough into balls and place on a greased cookie sheet. Press with a fork. Bake at 400 degrees for 10 minutes. Do not overbake.