2. Combine cake mix, yogurt, egg, butter and chopped pecans in large bowl. Beat at low speed with electric mixer until blended. Drop by rounded teaspoonfuls 2 inches apart onto prepared baking sheets. Press pecan half into center of each cookie. Bake for 11 to 13 minutes or until golden brown. Cool 1 minute on baking sheets. Remove to cooling racks. Cool completely. Store in airtight container.