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Quick Coffee Cake from Carla?

*2 cups flour
*1 cup brown sugar (was 1/2 cup -- Mom says she usually does 1 cup)
*1/2 cup white sugar (was 1 cup -- Mom says she usually does 1/2 cup)
*1/2 cup shortening
*1 tablespoon cinnamon ("1 t." I think is tablespoon)

Combine the above and set aside 1/2 cup of this mixture.

Add to main portion:
*1 beaten egg
*1 cup buttermilk (Mom says she usually uses milk with vinegar added to it: 1 cup regular milk + 1 TB.(tablespoon?) vinegar or lemon juice)
*1 tsp. baking soda

Mix only until well moistened.  Mixture may be lumpy.
Put into 13x9 greased and floured pan.
Sprinkle the 1/2 cup dry mixture (reserved earlier) over top.
Add chocolate chips over top.

Bake at 350 degrees F for 30 minutes.