Harvest Pumpkin Cake

3 1/2 cups flour
1 cup butter
2 cups sugar
4 eggs
2 teaspoons baking soda
2 teaspoons cinnamon
1 teaspoon salt
1 teaspoon nutmeg
1/2 teaspoon ginger
1/2 tablespoon cloves
1 1/2 cups canned pumpkin
1 1/2 cups chocolate chips
1 1/2 cups chopped walnuts (optional)

Preheat oven to 375�F. Cream butter, sugar, and eggs. add spices. Add flour and pumpkin. Stir in chocolate chips and nuts. Grease BOTTOM of 2 9x5 loaf pans. Bake at 375�F for 65-75 minutes, or until toothpick comes out clean.