1 cup granulated sugar
1 cup powdered sugar
1 tablespoon vanilla
1 teaspoon baking soda
1 teaspoon cream of tartar
1 teaspoon salt
4 cups plus 2 tablespoons all-purpose flour
additional granulated sugar, for rolling cookies
- In a large bowl of a stand mixer, beat together the butter, oil, sugar, powdered sugar, vanilla and eggs until creamed and combined, about 2 minutes.
- Add in the baking soda, cream of tartar, salt and flour; gently mix until a soft dough forms. Chill in the refrigerator for at least 2 hours.
- Preheat oven to 350 degrees F. Line baking sheets with parchment paper. Portion out golf-ball-size dough balls and roll in the additional sugar to coat. Place 2 inches apart on the baking sheets.
- Bake for 9 to 11 minutes or until golden brown. Do not overbake. Cool on the cookie sheets for several minutes before moving to wire racks to cool completely.