I think that this is the recipe you want:* Exported from MasterCook *

L.A. County Schools Coffee Cake

Recipe By : http://www.geocities.com/Heartland/3452/recipes.html
Serving Size : 24 Preparation Time :0:00
Categories :

Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
--Served during "Nutrition" in the 60's--
4 cup flour
2 cup brown sugar -- packed
1 1/2 cup granulated sugar
3/4 tsp salt
2 tsp nutmeg
12 oz chopped walnuts -- optional
1 1/2 cup oil
2 tsp cinnamon
1 tsp soda
1 TBS plus 1 tsp baking powder
3 large eggs
2 cup buttermilk

Combine first 7 ingredients. Mix until crumbly. Set aside 1 1/2
cup of crumb mixture and add the cinnamon to the 1 1/2 cup
reserved crumb mixture. Combine remaining crumb mixture with
remaining ingredients. Blend gently. Do not overmix. Pour into two
greased and floured 9X13 baking pans. Sprinkle evenly with
reserved crumb topping. Bake at 350 degrees for 25-30 minutes or
until cake tests done. Cut into squares to serve.

Makes 24 servings.