Place softened margarine, yogurt, sugar and vanilla into mixing bowl. Mix until well blended. Add remaining ingredients and blend well. Use a teaspoon or small melon scoop to make rounded balls of dough. Place 2 inches apart on ungreased cookie sheet; flatten slightly with fork dipped in flour or sugar. Bake in preheated 325-degree oven for 12-15 minutes. Remove immediately from cookie sheet and allow to cool on wire rack.