Thumbprint Cookies Recipe

In a large bowl, cream butter and sugar until light and fluffy. Beat in egg. Beat in the oil, vanilla and butter flavoring. Combine the flour, cornstarch, baking powder and salt; gradually stir into creamed mixture and mix well. Roll into 1-in. balls. In a small bowl, lightly beat egg white. Dip each ball halfway into egg white, then into pecans. Place nut side up 2 in. apart on baking sheets coated with cooking spray. Using the end of a wooden spoon handle, make an indentation in the center of each. Bake at 350° for 8-10 minutes or until the edges are lightly browned. Remove to wire racks. Fill each cookie with 1/4 teaspoon jam; cool. Yield: 2-1/2 dozen.