MOLASSES WALNUT CAKE

1 can (10-3/4 ounces) condensed tomato soup
1/2 cup water
1/4 cup oil
1/2 cup molasses
1/2 cup sugar
2 cups flour
2 teaspoons allspice
2 teaspoons cinnamon
1/2 teaspoon ground cloves
1 teaspoon baking soda
1 cup coarsely chopped walnuts
Powdered sugar

Combine all ingredients except walnuts and powdered sugar.  Blend until smooth.  Stir in nuts.  Spread batter in a greased 9x13 baking pan.  Bake at 350^o for 20 to 25 minutes or until tests done with a toothpick.  Sprinkle with powdered sugar before serving.