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Hi Barbara - since the recipe you're asking about is from a Usenet posting and I haven't tried it, I'm not sure whether you would need water with it our not (I suspect you might).

Here's a tried and true favorite of ours:

Slow Cooker Boston Brown Bread
From the Kitchen of: Betsy Couch - kitchenlink.com

Mix together:

1/2 cup flour
1/2 cup whole wheat flour
1/2 cup yellow corn meal
1/2 teaspoon salt
1/2 teaspoon baking soda
1/3 cup molasses
2/3 cup buttermilk or 1 tablespoon vinegar and milk to make 2/3 cup
1/2 cup raisins or currants (soak in hot water 10 minutes and drain)

Put in a well greased and floured one pound coffee can. Cover top with foil and tie. Set on trivet (I used a canning jar ring) in slow cooker. Pour 2 cups hot water into cooker around the can. Cover cooker and cook on high about 2 1/2 hours. Let stand in can on rack about 5 minutes. Turn out, slice and serve hot.

From my kitchen to yours,

Betsy