In a large mixing bowl or the bowl of a stand mixer fitted with paddle attachment, cream the butter, oil, granulated and powdered sugars together until nice and smooth. Add egg and vanilla and beat until completely incorporated, scraping down sides of bowl as necessary.

Sift flour, baking powder and salt into bowl and mix until just combined. Stir in pecans, then cover and refrigerate dough for 25–30 minutes. While the dough is resting, preheat oven to 375 degrees and line a baking sheet with parchment paper.

Scoop dough into 1" balls and place on prepared baking sheet at least 3" apart and press lightly until cookies are about ½" thick. Sprinkle top of each cookie with a light dusting of granulated sugar and bake 10–11 minutes or until tops of cookies change to a dry look.

Remove from oven and cool completely on wire racks then enjoy!