Chocolate Vegetables

from my good friend, Brenda in Hobart, Tasmania

1 cup firmly packed brown sugar
1 cup SR flour
1 cup plain flour
pinch salt
2 teaspoon mixed spice
125g butter or margarine
1/2 teaspoon bicarb soda
1/2 cup buttermilk (I have used plain milk with no problem)
1/2 cup well mashed bananas
1 egg, beaten

1. Mix together sugar, flours, salt and spice.  Cut butter into pieces, rub into flour etc until mixture resembles crumbs.  Press 1/2 into a greased 23cm square sandwich tin.

2. Dissolve the bicarb soda in the buttermilk, stir in mashed bananas and beaten egg.  Beat this mixture into the remaining half of the crumb mixture. Pour into tin.

3. Bake in a moderate oven for 40-45 minutes, leave for 5-10 minutes in tin and then carefully turn out.