
Put butter and cream cheese in the bowl of an electric mixer fitted with the paddle attachment. Mix on medium speed until pale and fluffy, about 2 minutes. Mix in sugar and vanilla. Reduce speed to low. Add flour and mix until just combined (do not overmix). Mix in toasted pecans.
Transfer dough to a work surface. Divide in half; shape each half into a 2 inch wide log. Wrap each log in parchment paper; freeze until firm, about 1 hour or up to 2 weeks.
Preheat oven to 350 degrees. Unwrap 1 log, and roll in 1/2 cup chopped pecans, coating completely. Cut into 1/4-inch-thick rounds. Space 1 inch apart on baking sheets lined with parchment paper.
Bake cookies, rotating halfway through, until golden around edges, about 20 Minutes. Repeat with remaining log.
