In a small bowl combine flour, cocoa, salt and baking soda. Mix well.
In a large bowl beat sugars and butter until light and fluffy. Add vanilla and eggs, one at a time, and beat well. Add flour mixture and blend. Chill dough at least 30 minutes.
In a small bowl combine chopped pecans.
For each cookie, shape about 1 tablespoon of dough around 1 Rolo, covering completely. Try to have more dough at the bottom of the cookie so that the candy doesn't melt through.
Press one side of each ball into the nut mixture and place, nut side up, two inches apart on ungreased cookie sheets. Bake at 375° for 10 minutes or until set and slightly cracked. Cool at least two minutes before removing from cookie sheets. Then cool completely on wire racks
Recipe by Sugar and Spice at https://kathleenssugarandspice.com/2011/12/20/chocolate-pecan-rolo-cookie-recipe/