Heat oven to 375°F. Line 3 cookie sheets with parchment paper. Set aside

Stir together flour, cocoa, baking soda, and salt. Set aside.

Combine olive oil, sugars, and vanilla in a mixing bowl. Mix with an electric mixer on medium speed for 3 minutes or until light and creamy.

Add eggs one at a time, mixing 1 more minute for each.

Add fl our mixture 1/2 cup at a time, mixing on low speed. Stir in pecans with a spoon.

Drop cookie batter 2 tablespoons at a time on prepared cookie sheets.

Bake on center oven rack for 14 to 15 minutes or until set.

Cool cookies slightly, then remove from cookie sheets to wire racks.