1. Beat butter at medium speed with an electric mixer until creamy; gradually add sugar, beating well. Add eggs, 1 at a time, beating just until blended after each addition.
2. Combine flour and next 3 ingredients in a medium bowl. Add flour mixture to butter mixture alternately with buttermilk, beginning and ending with flour mixture. Stir in vanilla. Pour batter into a greased and floured 13- x 9-inch pan. Cover tightly, and chill 8 to 24 hours.
3. Preheat oven to 350°. Let cake stand at room temperature 30 minutes. Sprinkle with Cinnamon-Nut Crumble. Bake 32 to 35 minutes or until wooden pick inserted in center comes out clean. Sprinkle Sweet Bourbon Drizzle over cake.