Preheat to 350; line cookie sheet with parchment paper.

Cream together butter, sugar, & brown sugar until smooth. Stir in vanilla & eggs. Combine the flour, baking soda, & salt; blend into the creamed mixture.

Fold in the chocolate and pecans.

Drop rounded spoonfuls onto the cookie sheet.

Bake 12+ minutes. Let cool on baking sheet for 5 minutes before transferring to wire rack.