The Best Peanut Butter Cookies

1/2 cup butter
1/2 cup lard or shortening
1 cup brown sugar
1 cup peanut butter
1 cup sugar
2 eggs, beaten.
3 cups all purpose flour
1 tsp baking soda
1/2 tsp salt
1 tsp vanilla

In bowl mix butter, lard, brown sugar, sugar and eggs. Add peanut butter, baking soda, salt and vanilla. Mix well. Roll into balls, using a fork to flatten. Bake at 350 degrees for 10-15 minutes.