About buttermilk: Add 1 tsp. white vinegar to a cup of whole milk if you cannot find buttermilk in your dairy case. If you use buttermilk only for baking, it can be frozen in 1-cup portions and thawed as needed.

Mix flour, sugars, oil and salt. Place ¾ cup of this mixture in a bowl with the nuts and cinnamon; reserve to top the cake.

Stir buttermilk, soda, baking powder and egg into dry ingredients until just incorporated; do not over beat, or cake will be dry.

Grease a 9-inch x 13-inch baking pan with oil or butter. Pour in batter and spread topping evenly. Bake at 300 degrees F 45 minutes-1 hour.

Substitute 2 loaf pans for the large baking pan if you want a cake to freeze for later.