Stir together first 7 ingredients; stir in egg, oil, and buttermilk, blending well. Stir in vanilla. Fold in figs and, if desired, pecans. Pour into a greased and floured 13- x 9-inch pan.
Bake at 325° for 35 minutes or until a wooden pick inserted in center comes out clean. Pierce top of cake several times with a wooden pick; drizzle Buttermilk Glaze over cake.