Mocha Spice Cake

1 1/2 cups flour
1 teaspoon baking soda
1 teaspoon cinnamon
1/2 teaspoon baking powder
1/2 teaspoon salt
1 cup sour cream
1/2 cup water
1 tablespoon instant coffee crystals
1/2 teaspoon vanilla
1/2 cup butter
1 1/2 cups sugar
2 eggs
2 squares baking chocolate

Mix dry ingredients; set aside. Cream together sour cream, water, coffee and vanilla; set aside. Cream butter. Gradually add sugar and beat until light and fluffy. Add eggs one at a time, beating thoroughly after each addition. Blend in melted chocolate. Add flour and sour cream mixtures alternately, beating after each addition until smooth. Pour into greased and floured 13"x9" pan. Bake at 350 degrees for 30-35 minutes or until toothpick comes out clean. Cool 10 minutes in pan, then remove to rack and finish cooling.